Maryland Metrics -- Fastener Technical Data

Maryland Metrics Metric Fastener Technical Information and Data -- Index If you do not have the Proper Proper (minimum (minimum version version 5.0) Acrobat Reader R eader software, then please follow the instructions below the table:

Click for the section 2 page index of our fastener technical data pages PAGE INDEX for FASTENER CATALOG CHAPTER - T

Reference

P age

Weights (mass)

Weights for nuts

T1

Weights Weights for screws: s crews: Hex head M3-M48 Lengths Lengths 5 mm-140 mm

T2

Weights Weights for screws: s crews: Hex head M3-M48 Lengths Lengths 16 mm-200 mm

T3

Weights Weights for screws: s crews: Socket S ocket head M1.6-M42 Lengt L engths hs 3 mm-150 m-150 mm

T4

Weights Weights for screws: s crews: Socket S ocket head M1.6-M42 Lengt L engths hs 160 mm-400 mm

T5

Weights Weights for Machine Machine screws: M1.6-M16 M 1.6-M16 Lengt L engths hs 2 mm-100 mm

T6

Weights Weights for Set S et screws: screws: M1.6-M24 L Lengt engths hs 3 mm-100 mm-100 mm

T7

Weights Weights for threaded rods: M1.6-M42

T7

Weights Weights for washers

T8

Dimensions

- Calculation of screw Dimensions

T10 T1 0

- Guidelines for maximum permissible operation force

T11 T1 1

- Minimum yield loads

T9

- E stimation of screw diameters

VDI 2230

- F atigue atigue strength strength

T12 T1 2 T13 T1 3

Materials: Property classes

- Steel property classes

ISO 898

T14 T1 4

Mating screws and nuts

ISO 898

T14 T1 4

Mechanical properties for bolts, screws and studs

ISO 898

T15 T1 5

Minimum breaking torques for bolts bolts and screws screws

T16 T1 6

Materials Materials for Nuts

T16 T1 6

Materials for bolts, screws and studs

T17 T1 7

Mechanical propert properties ies for nuts according to DIN DI N

T18 T1 8

Mechanical propert properties ies for nuts according to ISO I SO

T18 T1 8

Mechanical propert properties ies for fine thread nut nuts s according according to DIN/ISO DIN/I SO

T19 T1 9

Failure loads for nuts with nom nominal inal height of 0,5 D

T19 T1 9

- S teels for low and high temperature applications (-253 to -10 ° C)

DIN 267/13

T24 T2 4

- S teels for low and high temperature applications (-10 to -300 ° C)

DIN 267/13

T24 T2 4

- S teels for low and high temperature applications (above 300 ° C)

DIN 267/13

T25 T2 5

- S uitable mating materials for bolts and nuts

DIN 267/13

T25 T2 5

- Stainless steels -- Designation system (section 1)

ISO 3506

T26 T2 6

- S tainless steels -- Designation system (section 2)

ISO 3506

T27 T2 7

- Stainless steels

- Stainless Steel grades and property classes Mechanical properties according to DIN-ISO 3506

T28 T2 8

Minimum breaking torques (Mb min)

T29 T2 9

Chemical composition composition

T30 T3 0

Corrosion resistance

T30 T3 0

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 1) Acetic acid thru Barium chloride

T31 T3 1

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 2) Barium hydroxide thru Copper chloride

T32 T3 2

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 3) Copper carbonate thru Hydrazine sulphate

T33 T3 3

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 4) Hydrochloric acid thru milk

T34 T3 4

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 5) Mixed acid thru phenol

T35 T3 5

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 6) Phosphoric acid thru Potassium sulphate

T36 T3 6

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 7) Pyrogallic acid thru sugar solution

T37 T3 7

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 8) Sulphur, dry thru vegetables

T38 T3 8

Table Tables s of chem chemical ical resis esisttance ances s (p (page age 9) Vinegar thru zinc sulphate

T39 T3 9

- Special S pecial materials materials Hastelloy ®Inconel ®Monel ®

T40 T4 0

Nilo ®Nimonic ®Titanium

T40 T4 0

- Brass, kuprodur (copper)

ISO 8839

T42 T4 2

- Aluminum (aluminium)

ISO 8839

T42 T4 2

- P olyamid (nylon ®)

T43 T4 3

Tightening of fasteners

- Coefficien C oefficients ts of friction friction in the the bearing area (bolt or nut) nut) and in the thread thread µ total

T20 T2 0

- Steel screws

T21 T2 1

- Serrat S errated ed and ribbed ribbed screws and nuts

T22 T2 2

- Thread forming screws

DIN 7500

- P re-Loading of high strength structural bolting

DIN 18800

T22 T2 2 A48 A4 8

- Stainless steel screws

T29 T2 9

- Molycote ®lubrication for fasteners (See note: A below)

T41 T4 1

- Screws made of brass, aluminum, and copper

T42 T4 2

- Screws S crews made of polyamid (nylon ®)

T43 T4 3

- Reduced R educed loads for socket cap screw sc rews s with with either low head heights heights or smaller socket openings openings

T23 T2 3

Threads

- Screw threads to DIN standards, overview

T44 T4 4

- Screw S crew threads threads to other other stan s tandard dards, s, overview overview

T50 T5 0

- ISO metric screw threads - basic dimensions

ISO 261

T51 T5 1

-Threads: Limits of size/tolerance for nuts 5H/6H

ISO 965

T52 T5 2

-Threads: Limits of size/tolerance for nuts 5H/6H (continued) + 7H

ISO 965

T53 T5 3

-Threads: Limits of size/tolerance for bolts 6g/6h

ISO 965

T54 T5 4

-Threads: Limits of size/tolerance for bolts 6g/6h (continued) + 8g

ISO 965

T55 T5 5

Tolerances

- Screws and nuts

ISO 4759/1

General tolerances - dimensional dimensional

T56 T5 6

General tolerances - dimensional dimensional (continued) (continued)

T58 T5 8


T60 T6 0


T62 T6 2


T64 T6 4

- Washers - S tandard tolerances and deviations - DIN 7151

ISO 4759/3

T64 T6 4

DIN 7160-61

T66 T6 6

- Slot S lots s (nominal (nominal sizes) and Cross recesses recesses (nominal inal sizes)

T67 T6 7

- Widths across flats, hexagon products

ISO 272

T68 T6 8

- Widths across flats, hexagon products (continued)

ISO 272

T69 T6 9

- Core hole diameters for thread cutting screws

DIN 7513-16

T70 T7 0

- Core hole diameters for thread forming screws

DIN 7500

T70 T7 0

- Application and core hole diameters for tapping screws

DIN 7975

T71 T7 1

- Recommended core hole diameters for tapping screws in metals

DIN 7975

T72 T7 2

- Recommended core hole diameters fo for tapping screws in in metals (c (continued)

DIN 79 7975

T73 T7 3

- Recommended core hole diameters for tapping screws in plastics

DIN 7975

T73 T7 3

- E lectroplated coatings

ISO 4042

T74 T7 4

- E lectroplated coatings - coating metal/alloy

ISO 4042

T74 T7 4

- E lectroplated coatings - chromate treatment performance comparison

ISO 4042

T74 T7 4

Coatings and platings

-C Coatin oating g thickness for external external threads threads

T75 T7 5

- Surface treatment processes - coatings and platings

T76 T7 6

- E lectroplat lectroplated ed high-tensile steel

T77 T7 7

- E lectroplat lectroplated ed sprin s pring g steel

T77 T7 7

Securing against loosening

- Locking of fasteners

T78 T7 8

- Limitations of locking elements

T79 T7 9

- Stat S tatic ic and dynamic dynamic tests of various various locking elements elements

T81 T8 1

- Chem C hemical ical methods ethods for securin s ecuring g against loosening

T82 T8 2

- Kaflok ®(nylon ®- polyamid) patch (See note: A below)

DIN 267/28

T82 T8 2

- Microencapsulation P recote ®(See note: A below)

DIN 267/27

T83 T8 3

- Anerobic adhesives OmniFIT ®(See note: A below)

T84 T8 4

- Anerobic adhesives OmniFIT ®(continued)

T85 T8 5


T86 T8 6


T87 T8 7

Quality Certificates

- Material tests E N10204

DIN 50049

T88 T8 8

- Quality confirmation

T88 T8 8

- Origin

T88 T8 8

Click for the Master Fastener Catalog Index Page Click for many additional fastener technical data pages Click for additional technical data pages Note: A - We offer this only as a process applied to our fastener products, not as a separate 'for sale' item.

Thes These e dat data a char chartts are are als also o av availa ailab ble for for down ownload loadin ing g as as vie view wable able/p /prrint intable able Acr Acrobat obat PDF file files. s. If you do not have the Proper (minimum version 4.0) Acrobat Reader software, then download the free acrobat reader software from the: [Acrobat download page] Then Then use your our bac back k bu button to ret retu urn to th this pag page. e.

Please note that all Trademarks and Tradenames are the property of their respective owners. copyright 1998, 1999, 2002, 2003, 2006, 2007, 2010, 2011 maryland metrics -- all rights reserved -- ver gg20gCD inxtst.htm

Maryland Metrics Metric Fastener Technical Information and Data Section 2 Index If you do not have the Proper (minimum version 5.0) Acrobat Reader software, then please follow the instructions below the table:

Click for the section section 1 page index index of our fastener fastener technical technical data pages PAGE INDEX for Section 2 of our FASTENER TECHNICAL DATA CHARTS

Page

STANDARDS CONVERSION

4 -11

Standards conversion DIN–EN–ISO/ISO–EN–DIN

4

Standards types, relations

5

Normative changes to screws

6

Normative changes to nuts

7


8


9

Normative changes to bolts and pins

10

Normative changes to threads and tapping screws

11

DIMENSIONS FOR FASTENERS

12 -91

Dimensions for screws and bolts

12

– Hexagon and hexalobular socket head cap screws

12

– Hexagon head screws/bolts

13

– Studs

14

– Set screws/grub screws

15

– Screw plugs/pipe plugs

16

– Screw plugs/pipe plugs

17

– Lubricating nipples

18

– Theft resistant screws/locking screws/locking screws

18

– Other screws with metric thread

19


20


21


22


23

– Slotted and cross recessed screws with metric thread

24

– Slotted and cross recessed screws with metric thread

25

– Tapping screws, thread thread rolling screws and thread cutting screws

26


27


28

– Wood screws/chipboard screws screws

29

– Hooks/special Hooks/special bolts with wood screw thread

30

– Hooks/special Hooks/special bolts with wood screw thread

31

Dimensions for bolts, nuts and accessories for steel constructions

32

– Bolts, nuts and accessories, system HV

32

– Clamping lengths

33

Dimensions for nuts

34

– Hexagon nuts

34

– Locking nuts

38

– Locking nuts

39

– Nuts for T-slots

40

– Welding nuts

41

– Special forms

41

– Special forms

42

– Special forms

44

– Special forms

45

– Special forms

46

– Special forms

47

– Special forms

48

– Turnbuckles

49

– Square nuts

49

Dimensions for washers and rings

50

– Plain washers-round

50

– Plain washers-round

51

– Square washers/taper washers/taper washers

52

– Sealing washer-plain

53

– Retaining lock washers and rings

53


54


55


56


57


58


60


61


62


63


64


66


67


68

– Adjusting rings

69

– Special forms

70

– Special forms

71

– Special forms

72

Dimensions for pins

73

– Parallel pins/taper pins/grooved pins/grooved pins

73

– Parallel pins/taper pins/grooved pins/grooved pins

74

– Spring-type straight pins

75

– Linch pins/spring pins/spring cottes/split pins

76

– Linch pins/spring pins/spring cottes/split pins

77

Dimensions for handles

78

– Grips

78

– Tommy screws/tomm screws/tommy y nuts

79

– Tommy screws/tomm screws/tommy y nuts

80

Dimensions for brackets, clamps and rope fixings

81

– Stirrup bolts

81

– Hose clamps/pipe clamps

81

– Hose clamps/pipe clamps

83

– Rope clips/thimble clips/thimble ropes/shackles

84

Dimensions for rivets f

85

– Axle holders

86

– Parallel keys

86

– Parallel keys

87

Tolerances for screws, nuts and washers

88


89


90

Tolerances, ISO deviations

91

PRODUCT INFORMATION

93 -103

Disc springs

93

Head shapes, drive features and ends of externally threaded fasteners

94

Cable ties and accessories

96

Cable ties and accessories

97

Lifting eye bolts and lifting eye nuts

98

Special materials

99

Wire thread inserts

100

Wire thread inserts

100

Wire thread inserts

101

Self tapping thread inserts

103

STEELWORK FASTENER AND FIXING SYSTEMS -LINDAPTER

104 -106

Steelwork fixings – grider clamps

104

Steelwork fixings – grider clamps

105

Product overview: grider clamps, support fixings, cavity fixings an and flfloor fixings

106

Product overview: grider clamps, support fixings, cavity fixings an and flfloor fixings

107

PLUGS AND ANCHORS

109 -139

Plugs and anchors: Selection and assembly aids

109


110


111


112

FISCHER/UPAT: Plugs and anchors

113

– General fixings

113

– General fixings

114

– High performance steel anchors anchors

115


116


117


118


119


120


121


122


123


124

– Chemical fixings

126


127


128


129


130


131

– Cavity fixings

132

– Cavity fixings

133

– Long-shaft anchors/frame fixings/adjustment fixings/adjustment fixings

134


135


136

– Scaffold fixings

PLUGS AND ANCHORS

139

MULTI-MONTI screw -in -anchors

139


140


141

Blind rivets and accessories

142


143


144


145


146


147


148


149


150


151

BLIND RIVET SYSTEMS

142 -152

Blind rivet nuts and accessories

152


153


154


155

Profile, types, threadability

156

Profile, types, threadability

157

SCREW THREAD

156 -158

Tolerances, thread pitches

158

Tolerances, thread pitches

159

Steel screws, bolts, studs and nuts

160

Steel screws, bolts, studs and nuts

161

Fasteners from corrosion -resistant stainless steel

162

Fasteners from corrosion -resistant stainless steel

163

MECHANICAL PROPERTIES

160 -164

Fasteners from non -ferrous materials

164

Quality inspection

166

Certificates

166

Acceptance inspection inspection according to ISO 3269 INSPECTIONS, ACCEPTANCE TESTINGS, CERTIFICATES

167 166 -168

Test method: Hardness measurement, impact test

168

Test method: Hardness measurement, impact test

169

CORROSION PROTECTION

170 -184

General information, corrosion types, contact corrosion

170

Corrosion protection measures

171


172

Electroplated coatings, maximum layer thicknesses

173

Hot dip galvanized coatings

174

ASSEMBLY SCREWED FASTENINGS FASTENINGS

175-184

General information, tightening methods, friction coefficients

175

General information, tightening methods, friction coefficients

176

Preloads and tightening torque for fasteners of steel

177

Preloads and tightening torque for fasteners of steel

178

Preloads and tightening torque for screwed fastenings with locking elements

179

Assembly instructions, instructions, preloads and tightening torque for high -strength structural bolting (system (system HV)

180

Assembly instructions, instructions, preloads and tightening torque for high -strength structural bolting (system (system HV)

181

Preloads and tightening torque for fasteners from stainless steel

182

General information, measures

186

Form-fitting locking elements and adhesive coatings

187

LOCKING OF SCREWED FASTENINGS Product overview of fo form-fitting locking elements and ad adhesive co coatings DIRECTIVES AND LEGISLATION

186 -188 188 189 -192

EC Directive 2000/53/EC on end -of -life vehicles

189

EC Directive 2002/95/EC on electrical and el electronic equipment (ROHS directive)

189

ZEK 01 -08 PAK

189

HR 4040 – CPSIA

189

EC Directive 76/769/EEC

190

EC Directive EC 2006/122/EC (PFOS)

190

EC Regulation 1907/2006 – Chemicals regulation (REACH)

190

EC Directive 89/106/EEC (Construction products directive)

190

EC Directive 2006/42/EC (Machinery directive)

191

Equipment and Product Safety Act (GPSG)

191

EC Directive 97/23/Ec (Pressure equipment directive)

192

Fastener Quality Act (FQA)

192

Click for the section section 1 page index index of our fastener fastener technical technical data pages These data charts are also available for downloading as viewable/printable Acrobat PDF files. If you do not have the Proper (minimum version 4.0) Acrobat Acrobat Reader software, software, then download the free acrobat acrobat reader reader software from the: [Acrobat download page] Then use your back button to return to this page. Phones: Phones: (800) 638-1830 or (410) 358-3130 are available available Monday-Friday 8:30 AM to 5:30 PM Eastern time. Faxes: Faxes: (800) 872-9329 or (410) 358-3142 & E-mail are available available anytime. Warehouse Warehouse & showroom showroom hours are Monday-Friday 10 AM to 5:30 PM. [ To: Maryland Metrics home page ] [ To: Maryland Metrics Product Guide ] [ e-mail to Maryland Metrics ] Please note that all Trademarks and Tradenames are the property of their respective owners. copyright 2011 maryland metrics -- all rights reserved -- ver gg20gCD R264_tech_data_charts.htm

MARYLAND M E T R I C S

P.O.Box 261

Owings Mills, MD 21 211 117 USA

(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA

Weights in kg / 100 pieces

m d

M

1 1,2 1,4 1,6 1,8 2 2,2 2,5 3 3,5 4 5 6 8 10 12 14 16 18 20 22

0,5 d DIN 439 B ISO 4035

0,0057 0,0067 0,111 0,0136 0,0192 0,0254 0,0327 0,051 0,077 0,148 0,326 0,717 1,020 1,580 2,030 2,920 3,960 5 190

0,8 d DIN 934 ISO 4032 0,0030 0,0054 0,0063 0,0074 0,0094 0,0142 0,0204 0,0276 0,0383 0, 0,0512 0,0808 0,123 0,249 0,534 1,160 1,700 2,490 3,320 4,900 6,380 7 830

Nuts

1d VSM 13 75 756 ISO 4033

0,0178 0,0251 0,0346 0,0480 0,0642 0,101 0,154 0,324 0,658 1,480 2,220 2,950 4,090 6,040 7,590 10 000

DIN 917

DIN 1587

0,0738 0,131 0,220 0,429 0,950 1,930 2,550 3,700 4,810 7,000 9,410 11 900

0,157 0,251 0,466 1,150 2,010 2,830 4,150 5,430 9,500 10,400 12 900


P.O.Box 261




Hex head screws fully threaded

Weights have been calculated for steel: – Brass screws weigh about 1,08 times these values values – Aluminium screws weigh about 0,35 0,35 times these values – Polyamid screws weigh about 0,15 times times these values

ISO 4017 / DIN 933 L 5 6 8 10 12 14 16 18 20 22 25 28 30 35 40 45 50 55 60 65 70 80 90 100 110 120 130 140

M3 0,063 0,067 0,076 0,085 0,093 0,102 0,111 0,120 0,129 0,138 0,151 0,164 0,173 0,195 0,217

M4 0,131 0,139 0,154 0,170 0,185 0,201 0,216 0,232 0,247 0,263 0,286 0,309 0,325 0,363 0,402 0,441 0,480 0,518 0,557 0,596 0,635 0,712

M5 0,213 0,225 0,250 0,275 0,299 0,324 0,349 0,374 0,398 0,423 0,460 0,497 0,522 0,584 0,646 0,708 0,770 0,831 0,893 0,955 1,020 1,140 1,260

M6 0,375 0,410 0,445 0,480 0,516 0,551 0,586 0,622 0,657 0,710 0,763 0,798 0,886 0,975 1,060 1,150 1,240 1,330 1,420 1,500 1,680 1,860 2,030

M8

0,880 0,944 1,010 1,070 1,140 1,200 1,260 1,330 1,420 1,520 1,580 1,740 1,900 2,060 2,220 2,380 2,540 2,700 2,860 3,170 3,490 3 ,8 ,810 4,130 4,450 4,770

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M 24

M 27

M 30

M 33

M 36

M 39

M 42

M 45

M 48

1,870 1,970 2,070 2,170 2,270 2,370 2,470 2,620 2,770 2,870 3,120 3,370 3,620 3,870 4,130 4,380 4,630 4,880 5,380 5,880 6 ,3 ,390 6,890 7,390 7,890 7, 8,390

2,820 2,960 3,110 3,250 3,400 3,550 3,760 3,980 4,130 4,490 4,850 5,220 5,580 5,950 6,310 6,670 7,040 7,770 8,490 9 ,2 ,220 9,950 10,70 11,40 11 12,10

4,330 4,530 4,720 4,920 5,120 5,420 5,720 5,920 6,420 6,910 7,410 7,910 8,400 8,900 9,400 9,900 10,90 11,90 1 2, 2,90 13,90 14,90 15,90 15 16,90

6,010 6,280 6,550 6,810 7,210 7,610 7,880 8,550 9,210 9,880 10,50 11,20 11,90 12,50 13,20 14,50 15,90 17,20 18,50 19,90 19 21,20 21 22,50

8,880 9,210 9,540 10,00 10,50 10,90 11,70 12,50 13,13 14,20 15,00 15,80 16,60 17,50 19,10 20,80 2 2, 2,40 24,10 25,70 27,450 29,00

12,10 12,50 13,10 13,70 14,10 15,20 16,20 17,30 18,30 19,30 20,40 21,40 22,50 24,50 26,60 2 8, 8,70 30,80 30 32,90 35,00 37,00

15,30 16,10 16,80 17,40 18,60 19,90 21,20 22,50 23,80 25,00 26,30 27,60 30,20 32,70 3 5, 5,30 37,80 40,40 43,00 43 45,50

20,60 21,50 22,10 23,60 25,10 26,60 28,10 29,60 31,10 32,60 34,10 37,10 40,10 4 3, 3,10 46,10 49,10 52,10 52 55,10

30,10 30,90 32,80 34,70 36,70 38,60 40,50 42,50 44,40 46,40 50,20 54,10 5 8, 8,00 61.80 65,70 69,60 69 73,40

41,30 43,70 46,10 48,40 50,80 53,20 55,60 57,90 60,30 65,00 69,80 7 4, 4,50 79,30 84,00 88,70 88 93,50

55,80 58,70 61,60 64,50 67,40 70,30 73,30 76,20 82,00 87,80 9 3, 3,60 99,50 105,0 111,0 11 117,0

71,00 74,50 77,90 81,30 84,80 88,20 91,70 95,10 102,0 109,0 116,0 123,0 129,0 136,0 13 143,0

93,40 97,50 102,0 106,0 110,0 114,0 118,0 126,0 134,0 142,0 151,0 159,0 167,0 16 175,0

112,0 117,0 121,0 126,0 131,0 135,0 140,0 149,0 159,0 1 68 68,0 178,0 187,0 197,0 19 206,0

142,0 174, 17 4,00 153, 15 3,00 158, 15 8,00 164, 16 4,00 169, 16 9,00 180, 18 0,00 191, 19 1,00 202, 20 2,00 213, 21 3,00 224, 22 4,00 235, 23 5,00 245, 24 5,00

176,00 176, 182, 18 2,00 188, 18 8,00 194, 19 4,00 200, 20 0,00 213, 21 3,00 225, 22 5,00 237, 23 7,00 250, 25 0,00 262, 26 2,00 274, 27 4,00 287, 28 7,00

copyright 1998 Maryland Metrics

T2

L 5 6 8 10 12 14 16 18 20 22 25 28 30 35 40 45 50 55 60 65 70 80 90 100 110 120 130 140

All rights reserved


P.O.Box 261




Hex head bolts partially threaded

Weights have been calculated for steel: – Brass bolts weigh about 1,08 times these values – Aluminium bolts weigh about 0,35 times these values – Polyamid (nylon) bolts weigh about 0,15 t imes these values

ISO 4014 / DIN 931 L 16 18 20 22 25

M3 0,116 0,127 0,138 0,149 0,166

M4 0,220 0,240 0,260 0,280 0,309

M5

M6

0,410 0,441 0,488

0,675 0,742

M8

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M 24

M 27

M 30

M 33

M 36

M 39

M 42

M 45

M 48

L 16 18 20 22 25


P.O.Box 261




Hex head bolts partially threaded

Weights have been calculated for steel: – Brass bolts weigh about 1,08 times these values – Aluminium bolts weigh about 0,35 times these values – Polyamid (nylon) bolts weigh about 0,15 t imes these values

ISO 4014 / DIN 931 L 16 18 20 22 25 28 30 35 40 45 50 55 60 65 70 80 90 100 110 120 130 140 150 160 170 180 190 200

M3 0,116 0,127 0,138 0,149 0,166 0,182 0,193 0,221 0,249 0,277 0,304

M4 0,220 0,240 0,260 0,280 0,309 0,339 0,358 0,408 0,457 0,506 0,556 0,605 0,654 0,704 0,753 0,852

M5

0,410 0,441 0,488 0,534 0,565 0,642 0,719 0,796 0,873 0,950 1,030 1,100 1,180 1,340 1,490 1,640

M6

0,675 0,742 0,808 0,853 0,964 1,070 1,190 1,300 1,410 1,520 1,630 1,740 1,960 2,180 2,410 2,630 2,850 3,040 3,270 3,490

M8

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M 24

M 27

M 30

M 33

M 36

M 39

M 42

M 45

M 48

1,560 1,640 1,840 2,040 2,230 2,430 2,630 2,830 3,020 3,220 3,620 4,010 4,400 4,800 5,190 5,540 5,940 6,330 6,730 7,120 7,520 7,910 8,300

3,220 3,530 3,840 4,150 4,460 4,760 5,070 5,380 6,000 6,610 7,230 7,850 8,460 9,010 9,630 10,20 10,90 11,50 11 12,10 12,70 13,30

5,020 5,460 5,900 6,350 6,790 7,230 7,680 8,570 9,450 10,30 11,20 12,10 12,90 13,80 14,70 15,60 16,50 16 17,30 18,20 19,10

7,640 8,250 8,885 9,460 10,10 10,70 11,90 13,10 14,30 15,50 16,70 17,80 19,00 20,20 21,40 22,60 23,80 25,00 26,20

10,10 10,80 11,60 12,40 13,20 14,00 15,60 17,20 18,70 20,30 21,90 23,30 24,90 26,50 28,10 29,60 31,20 32,80 34,40

14,40 15,40 16,40 17,40 18,40 20,40 22,40 24,40 26,40 28,40 30,20 32,20 34,20 36,20 38,20 40,20 42,20 44,20

19,70 20,90 22,20 23,40 25,90 28,30 30,80 33,30 35,70 38,00 40,40 42,90 45,40 47,80 50,30 52,80 55,20

25,50 26,90 28,40 31,40 34,40 37,40 40,40 43,40 46,10 49,10 52,10 55,00 58,00 61,00 64,00 67,00

33,20 35,00 38,50 42,10 45,60 49,20 52,70 56,00 59,50 63,10 66,60 70,20 73,70 77,30 80,80

47,00 51,50 56,00 60,50 65,00 69,50 73,60 78,10 82,60 87,10 91,50 96,00 101,0 105,0

66,20 71,70 77,30 82,80 88,40 93,40 99,00 105,0 110,0 11 116,0 11 121,0 127,0 132,0

89,40 96,10 103,0 110,0 116,0 122,0 129,0 136,0 13 143,0 14 149,0 156,0 163,0

110,0 118,0 126,0 134,0 141,0 149,0 157,0 165,0 173,0 181,0 189,0 197,0

144,0 154,0 163,0 172,0 181,0 191,0 200,0 209,0 219,0 228,0 237,0

181,0 192,0 202,0 212,0 223,0 234,0 245,0 256,0 267,0 278,0

215,0 227, 22 7,00 239, 23 9,00 251, 25 1,00 264, 26 4,00 276, 27 6,00 289, 28 9,00 301, 30 1,00 314, 31 4,00 326, 32 6,00

265,00 265, 278, 27 8,00 293, 29 3,00 307, 30 7,00 321, 32 1,00 335, 33 5,00 349, 34 9,00 364, 36 4,00 378, 37 8,00


T3

L 16 18 20 22 25 28 30 35 40 45 50 55 60 65 70 80 90 100 110 1200 12 1300 13 1400 14 1500 15 1600 16 1700 17 1800 18 1900 19 2000 20

All rights reserved


P.O.Box 261



Socket head cap screws

L 3 4 5 6 8 10 12

M 1,6 0,009 0,010 0,011 0,012 0,014 0,016 0,018

M2 0,015 0,017 0,019 0,021 0,025 0,029 0,035

M 2,5 0,030 0,034 0,037 0,040 0,046 0,052 0,058

Weights have been calculated for steel


M3

M4

M5

M6

0,063 0,067 0,071 0,080 0,088 0,096

0,150 0,165 0,180 0,195

0,270 0,295

0,470 0,507

M8

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M 24

M 27

M 30

M 33

M 36

M 42

L 3 4 5 6 8 10 12


P.O.Box 261



Socket head cap screws

L 3 4 5 6 8 10 12 14 16 18 20 22 25 30 35 40 45 50 55 60 65 70 75 80 90 100 110 120 130 140 150

M 1,6 0,009 0,010 0,011 0,012 0,014 0,016 0,018 0,020 0,022

M2 0,015 0,017 0,019 0,021 0,025 0,029 0,035 0,041 0,047

M 2,5 0,030 0,034 0,037 0,040 0,046 0,052 0,058 0,064 0,070 0,076 0,082 0,089 0,097



M3 0,063 0,067 0,071 0,080 0,088 0,096 0,105 0,116 0,126 0,136 0,146 0,161 0,186 0,211 0,236 0,261 0,286 0,311 0,336

M4

0,150 0,165 0,180 0,195 0,210 0,225 0,245 0,265 0,285 0,315 0,365 0,415 0,465 0,515 0,565 0,615 0,665 0,715 0,765 0,815 0,865 0,970 1,070

M5

M6

M8

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M 24

M 27

M 30

M 33

M 36

M 42

0,270 0,295 0,320 0,345 0,370 0,401 0,432 0,478 0,555 0,632 0,709 0,786 0,863 0,940 1,02 1,10 1,18 1,25 1,33 1,48 1,64 1,80 1,95

0,470 0,507 0,546 0,575 0,614 0,653 0,692 0,759 0,870 0,99 1,10 1,21 1,32 1, 1,43 1, 1,54 1,65 1,76 1, 1,87 1, 1 ,98 1, 2 ,20 2, 2 ,42 2, 2,64 2,86 3,08 3,30 3,52

1,15 1,21 1,27 1, 1 ,34 1, 1 ,40 1, 1 ,50 1, 1,69 1,89 1, 2 ,09 2, 2 ,29 2, 2,49 2,69 2,89 3,10 3,30 3, 3,50 3, 3 ,70 3, 4 ,10 4, 4 ,50 4, 4,90 5,40 5,70 6,10 6,50

1,99 2,09 2,19 2,29 2,39 2,59 2,79 2, 3,10 3, 3 ,41 3, 3 ,72 3, 4,03 4,34 4,65 4,96 5,27 5, 5,58 5, 5 ,89 5, 6 ,51 6, 7 ,13 7, 7,74 8,36 9,01 9,64 10,27

3,21 3,35 3,57 3,93 3, 4,29 4, 4 ,73 4, 5 ,17 5, 5,61 6,05 6,49 6,93 7,37 7, 7,81 7, 8 ,25 8, 9 ,13 9, 10,00 10,90 11,80 12,50 13,40 14,30

5,3 5,8 6,3 6,9 7,5 8,1 8,7 9,3 9,9 10,5 10 11,1 11 1 2,3 12 13,5 14,7 15,9 16,8 18,0 19,2

7,7 8,4 9,1 9,7 10,6 11,4 12,2 13,0 13,8 14,6 14 1 5,4 15 1 7,0 17 1 8,6 18 20,2 21,8 23,4 25,0 26,6

12,9 13,7 14,7 15,7 16,7 17,7 18,7 18 19,7 19 2 0,7 20 2 2,7 22 2 4,7 24 26,7 28,7 30,7 32,7 34,7

1155,0 1 6,1 16 17,2 18,3 19,5 20,7 22,0 22 23,2 23 2 4,4 24 2 6,9 26 2 9,4 29 31,9 34,4 36,9 39,4 41,9

25,0 26,3 27,6 29,1 30,6 30 32,1 32 3 3,6 33 3 6,6 36 3 9,6 39 42,6 45,6 48,6 51,6 54,6

30,0 31,6 33,0 34,5 36,3 36 38,1 38 3 9,9 39 4 3,5 43 4 7,1 47 50,7 54,3 57,9 61,5 65,5

44,0 44 4466,2 4 8,4 48 5 2,9 52 5 7,4 57 61,9 66,4 70,9 75,4 79,9

6699,0 7 4,5 74 8 0,0 80 85,5 91,0 96,5 102 108

97 11004 111 11 118 125 132 13

123 131 139 147 155 163

200 210 221 232

L 3 4 5 6 8 10 12 14 16 18 20 22 25 30 35 40 45 50 55 60 65 70 75 80 90 100 110 1 20 20 1 30 30 1 40 40 1 50 50

Above dash line: fully threaded copyright 1998 Maryland Metrics

T4

All rights reserved


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Socket head cap screws



ISO 4762 4762 / DIN 912 L 160 170 180 190 200 210 220 230

M 1,6

M2

M 2,5

M3

M4

M5

M6 3,74 3,96 4,18 4,40 4,62

M8 6,90 7,30 7,70 8,10 8,50 9,30 10,10 10 90

M 10 10,90 11,50 12,10 12,70 13,42 14,05 14,68 15 31

M 12 15,2 16,1 17,0 17,9 18,8 19,7 20,6 21 5

M 14 20,4 21,7 24,0 25,2 26,4 27,6 28,9 30 1

M 16 28,2 29,8 31,4 33,0 34,6 36,2 37,8 39 4

M 18 34,7 36,7 38,7 40,7 42,7 44,7 46,7 48 7

M 20 44,4 46,9 49,4 51,9 54,4 56,9 59,4 61 9

M 22 57,6 60,6 63,6 66,6 69,6 72,6 75,6 78 6

M 24 68,7 72,3 75,9 78,5 82,0 86,7 90,3 93 9

M 27 84,4 88,9 93,4 97,9 102,0 106,5 111,0 115 5

M 30 113 119 124 130 135 140 146 151

M 33 139 146 153 160 167 16 174 181 188

M 36 171 179 187 195 203 211 219 227

M 42 242 253 264 275 286 297 308 319

L 160 170 180 190 200 210 220 230


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Socket head cap screws



ISO 4762 4762 / DIN 912 L 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 320 340 350 360 380 400

M 1,6

M2

M 2,5

M3

M4

M5

M6 3,74 3,96 4,18 4,40 4,62

M8 6,90 7,30 7,70 8,10 8,50 9,30 10,10 10,90 11,70 12,30 12,90 13,50 14,20 14,90 15,50

M 10 10,90 11,50 12,10 12,70 13,42 14,05 14,68 15,31 15,94 16,57 17,20 17,83 18,46 19,07 20,50

M 12 15,2 16,1 17,0 17,9 18,8 19,7 20,6 21,5 22,4 23,5 24,2 25,3 26,2 27,1 28,0

M 14 20,4 21,7 24,0 25,2 26,4 27,6 28,9 30,1 31,2 32,3 33,4 34,6 35,9 37,2 38,5

M 16 28,2 29,8 31,4 33,0 34,6 36,2 37,8 39,4 41,0 42,6 44,2 45,8 47,4 49,0 50,6 53,8 57,0 58,6 60,2 63,4 66,6

M 18 34,7 36,7 38,7 40,7 42,7 44,7 46,7 48,7 50,7 52,7 54,7 56,7 58,7 60,7 62,7 66,7 70,7 72,7 74,7 78,7 82,7

M 20 44,4 46,9 49,4 51,9 54,4 56,9 59,4 61,9 64,4 66,9 69,4 71,9 74,4 76,9 79,4 84,5 89,5 92,0 94,5 99,5 104,5

M 22 57,6 60,6 63,6 66,6 69,6 72,6 75,6 78,6 81,6 84,6 87,6 90,6 93,6 96,6 99,6 105,6 108,6 111,6 114,6 120,6 126,6

M 24 68,7 72,3 75,9 78,5 82,0 86,7 90,3 93,9 97,5 101,1 104,7 108,3 111,9 113,5 119,1 126,3 130,0 133,5 137,0 144,7 152,0

M 27 84,4 88,9 93,4 97,9 102,0 106,5 111,0 115,5 120,0 124,5 129,0 133,5 138,0 143,0 147,5 157,0 166,0 170,5 175,0 184,0 193,0

M 30 113 119 124 130 135 140 146 151 157 162 168 173 179 180 190 201 212 217 223 234 245

M 33 139 146 153 160 167 16 174 181 188 195 202 209 216 223 230 237 251 265 272 279 293 307

M 36 171 179 187 195 203 211 219 227 235 243 251 259 267 275 283 299 315 323 331 347 363

M 42 242 253 264 275 286 297 308 319 330 341 352 363 374 385 396 418 440 451 462 484 506

L 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 320 340 350 360 380 400

Socket head cap screws with low head (DIN 7984, DIN 6912) weigh about 0,7-0,9 times these values. T5


All rights reserved


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Weights in kg / 100 pieces

Slotted machine screws

Weights have been calculated for steel: – Brass screws weigh about 1,08 times the se values

– Aluminium screws weigh about 0,35 0 ,35 times these values DIN 84, DIN 85 L 2 3 4 5 6 8 10

M 1,6 0,007 0,00 0, 0088 0,009 0,010 0,011 0,014 0 016

M2

M 2,5

M3

M4

0,0166 0,01 0, 017 0, 019 0, 021 0, 025 0,0 ,0229

0,0277 0,02 0,030 0,033 0,036 0,042 0 048

0,0477 0,04 0 , 0 51 0 , 0 56 0 , 0 60 0 , 0 69 0,0 ,0778

0,102 0,109 0,117 0,133 0 147

M5

0, 206 0, 220 0 255

M6

0, 35 0 39

DIN 963, DIN 964 M8

0 78

M 10

M 1, 6 0,004 0,00 0, 0055 0,006 0,008 0,009 0,01 0, 0111 0 01 3

M2 0,0100 0,01 0,011 0,013 0,015 0,01 0, 0199 0 023

– Polyamid (nylon) screws weigh about 0 ,15 times these values

M 2, 5

M3

0,0177 0,01 0,020 0,029 0,023 0,0335 0,026 0,0379 0,03 0, 0322 0,0 ,046 4677 0,0 ,0338 0,0 ,05555

M4

M5

0,0676 0,0754 0,07 54 0,12 0,1211 0,09 0, 0911 0, 0,14 1455 0,1 ,1006 0 170

M6

M8

0,2199 0,21 0,2 ,2554

0,5 ,500

M 10

M 12

M 16

L 2 3 4 5 6 8 10


P.O.Box 261



Slotted machine screws

Weights have been calculated for steel: – Brass screws weigh about 1,08 times the se values

– Aluminium screws weigh about 0,35 0 ,35 times these values DIN 84, DIN 85 L 2 3 4 5 6 8 10 12 (14) 16 (18) 20 (22) 25 (28) 30 35 40 45 50 55 60 70 80 90 100

M 1,6 0,007 0,00 0, 0088 0,009 0,010 0,011 0,014 0,016 0,01 0, 0188 0,020 0,023 0,

M2

M 2,5

M3

0,0166 0,01 0, 017 0, 019 0, 021 0, 025 0,0 ,0229 0,03 0, 0322 0, 036 0, 040 0, 044 0, 047 0, 051

0,0277 0,02 0,030 0,033 0,036 0,042 0,048 0,05 0, 0544 0,060 0,066 0,072 0 ,0 ,078 0.084 0. 0,09 0, 0933 0,102 0,111 0,120 0,129 0,138

0,0477 0,04 0 , 0 51 0 , 0 56 0 , 0 60 0 , 0 69 0,0 ,0778 0,08 0, 0866 0, 093 0, 104 0,113 0 ,1 ,122 0,131 0, 0,14 0, 1444 0 , 1 57 0 , 1 66 0 , 1 88 0 , 2 10 0 , 2 32 0,254 0 , 2 76 0 , 2 98

DIN 7985, DIN 965, DIN 966

M4

0,102 0,109 0,117 0,133 0,147 0,163 0,179 0,195 0,210 0 ,2 ,225 0,240 0,264 0,287 0,302 0,349 0,380 0,417 0,457 0,471 0,490 0,566 0,642 0,718

M5

0, 206 0, 220 0, 255 0 , 280 0, 0, 30 5 0, 3 30 0, 35 4 0 ,3 ,378 0, 402 0, 440 0, 467 0, 502 0, 562 0, 625 0, 688 0, 750 0, 810 0, 875 1, 000 1, 130 1, 255 1, 380

M6

0, 35 0, 39 0, 42 0, 46 0, 49 0 , 53 0, 0, 56 0, 60 0,65 0, 0, 7 1 0, 7 4 0, 8 2 0,92 0, 1,00 1, 09 1,17 1,26 1, 43 1,60 1,77 1, 94

DIN 963, DIN 964 M8

0,78 0,84 0,91 0,97 1,04 1,10 1,17 1,26 1,36 1 ,42 1, 1,58 1,74 1,89 2,06 2, 2,21 2,36 2,70 3,01 3,33 3,65

M 10

M 1, 6 0,004 0,00 0, 0055 0,006 0,008 0,009 0,01 0, 0111 0,013

1,46 1,56 1,66 1,76 1,86 1,96 2,11 2,26 2 ,36 2, 2,61 2,86 3,11 3,36 3, 3,61 3,86 4,36 4,86 5,35 5,85

M2 0,0100 0,01 0,011 0,013 0,015 0,01 0, 0199 0,023 0,026 0,030 0,034 0,038 0,04 0, 0422

– Polyamid (nylon) screws weigh about 0 ,15 times these values

M 2, 5

M3

M4

0,0177 0,01 0,020 0,029 0,023 0,0335 0,0676 0,026 0,0379 0, 0,07 0754 54 0,03 0, 0322 0,0 ,046 4677 0, 0,09 0911 0,0 ,0338 0,0 ,05555 0,1 ,1006 0 , 0 44 0, 064 3 0, 12 2 0, 0,050 0, 0,0731 0, 0,137 0,056 0,082 0,153 0,062 0,0908 0,1 ,1668 0,06 0, 0688 0, 0,09 0996 96 0,184 0,074 0,108 0,199 0,083 0,122 0,222 0,092 0,135 0,246 0,098 0,144 0,261 0,166 0,3 ,3000 0,188 0,338 0,210 0,376 0,232 0,414 0,254 0,452 0,276 0,490 0,5 ,5666 0, 642 0 , 7 18

M5

M6

M8

M 10

M 12

M 16

0,1211 0,12 0,14 0, 1455 0,170 0 ,195 0, 0,219 0,244 0,269 0,294 0,318 0,355 0,393 0,416 0,465 0,540 0,602 0,665 0,728 0,791 0,917 1,043 1,169 1,295

0,2199 0,21 0,2 ,2554 0 , 289 0, 0, 325 0, 360 0,3 ,3995 0, 43 1 0, 466 0, 519 0, 57 2 0 , 60 8 0,6 ,6996 0, 78 4 0, 87 3 0, 96 1 1 , 0 49 1 , 1 37 1,3 ,3113 1, 48 9 1, 665 1, 841

0,5 ,500 0, 56 0, 63 0, 69 0,7 ,755 0, 82 0, 88 0,97 0, 1. 07 1 , 14 1,3 ,300 1, 46 1, 62 1, 78 1, 94 2, 10 2,4 ,422 2, 74 3, 06 3, 38

0,95 1,06 1,16 1,26 1,36 1,46 1, 1,61 1,76 1 ,86 1, 2,11 2,36 2,61 2,86 2, 3,11 3,37 3,80 4,39 4, 9 5,41

2,08 2,22 2, 4 4 2, 6 6 2, 8 1 3, 1 7 3, 5 3 3 , 90 4. 2 6 4, 6 2 4, 9 8 5, 1 7 6,444 6,4 7, 7 1 8, 9 8

4, 7 5, 1 5, 4 6, 1 6, 7 7, 4 8, 1 8, 7 9, 4 10,8 12,1 13,4 14,8

L 2 3 4 5 6 8 10 12 (14) 16 (18) 20 (22) 25 (28) 30 35 40 45 50 55 60 70 80 90 100

Cross recessed sc screws rews weigh about 1,10 times these values copyright 1998 Maryland Metrics

T6

All rights reserved


P.O.Box 261



Set screws

Weights have been calculated for steel: – Brass screws weigh about 1,08 times these values

ISO 4026-4029 / DIN 913–DIN 916 4766, 7434-6 / DIN 417, DIN 438, DIN 551, DIN 553 553 L 3 4 5 6 8 10 12

M 1,6 0,0029 0,0037 0,0046 0,0056

M2 0,0044 0,0059 0,0074 0,0089 0,0119 0,0148

M 2,5 0,0075 0,01 0,0125 0,015 0,0199 0,0249

M3 0,010 0,014 0,018 0,022 0,031 0,040 0 049

ISO

– Aluminium screws weigh about 0,35 times these values – Polyamid (nylon) screws weigh about 0,15 times these values

M4

M5

M6

M8

M 10

0,022 0,030 0,038 0,053 0,068 0 083

0,056 0,080 0,104 0 128

0,111 0,146 0 181

0,189 0,252 0 315

0,378 0 478

M 12

M 14

M 16

M 18

M 20

M 22

M 24

M 27

M 30

M 33

M 36

M 42

L 3 4 5 6 8 10 12


P.O.Box 261



Set screws

Weights have been calculated for steel: – Brass screws weigh about 1,08 times these values

ISO 4026-4029 / DIN 913–DIN 916 4766, 7434-6 / DIN 417, DIN 438, DIN 551, DIN 553 553 L 3 4 5 6 8 10 12 16 18 20 22 25 30 35 40 45 50 55 60 70 80 90 100

M 1,6 0,0029 0,0037 0,0046 0,0056

M2 0,0044 0,0059 0,0074 0,0089 0,0119 0,0148

M 2,5 0,0075 0,01 0,0125 0,015 0,0199 0,0249

M3 0,010 0,014 0,018 0,022 0,031 0,040 0,049 0,067 0,076 0,085 0,094

M4 0,022 0,030 0,038 0,053 0,068 0,083 0,113 0,128 0,143 0,158

M5

0,056 0,080 0,104 0,128 0,176 0,200 0,224 0,248 0,284

ISO

– Aluminium screws weigh about 0,35 times these values – Polyamid (nylon) screws weigh about 0,15 times these values

M6

M8

M 10

M 12

M 14

M 16

M 18

M 20

M 22

M 24

0,111 0,146 0,181 0,251 0,286 0,321 0,356 0,409 0,497 0,585

0,189 0,252 0,315 0,441 0,504 0,567 0,630 0,726 0,885 1,040 1,200 1,360 1,520 1,680 1,840 2,160 2,480 2,780 3,10

0,378 0,478 0,678 0,777 0,876 0,975 1,120 1,370 1,620 1,870 2,120 2,370 2,620 2,870 3.,370 3,870 4,370 4,870

0,96 1,10 1,24 1,38 1,60 1,96 2,32 2,68 3,04 3,40 3,76 4,12 4,84 5,56 6,28 7,00

1,56 1,76 1,96 2,25 2,55 3,15 3,65 4,13 4,64 5,16 5,70 6,73 7,76 8,80 9,82

2,15 2,47 2,80 3,46 4,11 4,77 5,43 6,09 6,75 7,41 8,67 10,00 11,27 12,57

2,75 3,12 3,55 4,42 5,22 6,00 6,87 7,68 8,55 9,35 10,93 12,60 14,20 15,85

4,26 5,29 6,32 7,35 8,38 9,41 10,40 11,47 13,53 15,60 17,65 19,71

5,15 6,40 7,45 8,73 10,02 11,30 12,60 13,85 16,42 19,00 12,60 24,11

7,2 8,7 10,2 11,7 13,2 14,7 16,2 19,2 22,2 25,2 28,2

M 27

M 30

M 33

M 36

M 42

L 3 4 5 6 8 10 12 16 18 20 22 25 30 35 40 45 50 55 60 70 80 90 100

Threaded Threa ded rods DIN 975

Weights in kg / 100 pieces L

M 1,6

M2

M 2,5

M3

M4

M5

1000

1,2

1,87

3

4,4

7,8

12,4

M6 17,7

M8

M 10

31,9

50

M 12 72,5

M 14 97

M 16

M 18

M 20

M 22

133

165 16

208

254

M 24

M 27

M 30

M 33

300

385

475

590


T7

M 36

M42

L

690

940

1000

All rights reserved


P.O.Box 261



Wei eig ght hts s in in kg kg / 100 pie iece ces s

Washers


P.O.Box 261



Wei eig ght hts s in in kg kg / 100 pie iece ces s

d 1,6 1,8 2 2,2 2,5 3 3,5 4 5 6 8 10 12 14 16 18 20 22 24 27 30

DIN 125 0,002 0,003 0,004 0,009 0,010 0,012 0,015 0,030 0,044 0,114 0,214 0,408 0,627 0,86 1,13 1,47 1,72 1,84 3,23 4,23 5,36

DIN 9021

0,025 0,034 0,052 0,077 0,194 0,279 0,684 1,22 2,65 3,33 4,09 6,74 7,82

Washers

DIN 127

DIN 128

0,003 0,005 0,005 0,011 0,012 0,018 0,036 0,083 0,160 0,253 0,382 0,601 0,891 0,973 1,52 1,65 2,62 2,87 4,43

0,003 0,005 0,009 0,010 0,015 0,03 0,07 0,13 0,21 0,32 0,48 0,70 0,78 1,22 1,33 2,15 2,37 4,25

DIN 434

DIN 6916

0,95 0,88 1,83

0,703

3,41

1,46

5,7 8,25 1,28 11,9

1,96 2,43 3,06 5,02 6,32


P.O.Box 261



Calculation of screw dimensions For the calculation of screw dimensions, yield stress is the most important factor, assuming sufficient nut strength or thread engagement is provided. It is the basis for calculating the highest load not causing plastic deformation of the fastener. When yield stress is exceeded, the fastener will extend more and more and finally break under the increasing load. The highest operating force must neither equal nor surpass the relevant yield load (load at yield stress and at Rp 0.2 respectivel respectively: y: see page T9), but must remain within an adequate safety limit below this factor. For simple static joints, operating force is permitted to reach approx. 90% of the yield load. When safety issues arise, or the load becomes dynamic, operating force must be a smaller portion of the yield load. The selection of the most suitable property class for bolted joints depends on the force to be transferred and on the designed dimensions. As a rule of thumb, property class 8.8 is to be selected unless special requirements need to be met. Property class 8.8 is not subject to any limiting conditions conditions as a result of electrolytic plating. Note the following with regard to relevant fields of application: - For lightweight construction, small given joint sizes are to be used to avoid extra weight, so the highest possible property classes with high mechanical properties should be selected. - The higher the selected property class, the higher the pressure on the bearing surface under screw head and nut. Check material specifications for maximum bearing stresses. - The possibility of brittle fracture, especially in case of unforeseen overstressing - or in case of a catastrophe - grows with increasing mechanical properties. This may be compensated to a certain extent by specific designing of the structura structurall parts and by favorable fastening conditions - i.e. longer clamping length or reduced shank diameters. - With increasing mechanical mechanical properties, properties, consider using a plating plating or coating without embrittling effect. - Different conditions, such as low-temperature ductility, heat resistance or corrosion resistance have special requirements. Fasteners made of steel according to standardized pro-


P.O.Box 261



Guidelines for maximum permissible operation force Type of force

Permissible operating force in % of the yield load

Property class

3. 6 – 6. 6

4. 8 – 8. 8 10. 9 – 14. 9

Constant tensile force Safety limit against fracture: 2 85%

62%

55%

24%

18%

16%

Repeated tensile shocks Safety limit against fracture: 2 Notch factor of thread: K = 3,5

Constantly alternating (dynamic) tensile force (rotating parts, over 10 000 changes of load) Safety limit against fracture: 2 Notch factor of thread: Kw = 3 Fatigue strength under bending stress = 55% of the tensile strength


P.O.Box 261



Minimum yield load at yield stress (property classes 3.6 - 6.8) and at Rp 0.2 at (stress at permanent set limit of 0.2% for property classes 8.8 - 12.9) respectively. Dimension (with pitch P)

c o a r s e p i t c h

f i n e p i t c h

M 4 x 0,7 M 5 x 0,8 M 6x1 M 8 x 1,25 M 10 x 1, 5 M 12 x 1, 75 M 14 x 2 M 16 x 2 M 18 x 2, 5 M 20 x 2, 5 M 22 x 2, 5 M 24 x 3 M 27 x 3 M 30 x 3, 5 M 33 x 3, 5 M 36 x 4, 0 M 8x1 M 10 x 1 M 10 x 1, 25 M 12 x 1, 25 M 12 x 1,5 M 14 x 1, 5 M 16 x 1, 5 M 18 x 1, 5 M 20 x 1, 5 M 22 x 1, 5 M 24 x 2 M 27 x 2 M 30 x 2 M 33 x 2 M 36 x 3

Nominal thread stress area AS (mm2) 8,78 14,2 20, 1 36, 6 58, 0 84, 3 115 157 192 245 303 353 459 561 694 817 39, 2 64,5 61, 2 92, 1 88, 1 125 167 216 272 333 384 496 621 761 865

Minor thread stress area A3 (mm2) 7,75 12,69 17,89 32,84 52,3 76,25 104,7 144,1 175,1 225,2 281,5 324,3 427,1 519,0 647,2 759,3 36,03 60,45 56,29 86,03 81,07 116,1 157,5 205,1 259,0 319,2 364,9 473,2 596,0 732,8 820,4

3.6 [N] 1 700 2 700 3 900 7 000 11 000 16 000 22 000 30 000 37 000 47 000 58 000 67 000 87 000 107 000 132 000 155 000 7 500 12 500 12 000 17 500 17 000 24 000 32 000 41 000 52 000 63 000 73 000 94 000 118 000 145 000 165 000

4. 6 [N] 2 100 3 400 4 900 8 800 14 000 20 500 28 000 38 000 46 000 59 000 73 000 85 000 110 000 135 000 167 000 196 000 9 400 15 500 15 000 22 000 21 500 30 000 40 000 52 000 65 000 80 000 92 000 119 000 149 000 183 000 208 000

4.8 [N] 3 000 4 900 6 900 12 500 20 000 29 000 39 000 54 000 65 000 84 000 103 000 120 000 156 000 191 000 236 000 278 00 13 500 22 000 21 000 32 000 30 000 43 000 57 000 74 000 93 000 113 000 131 000 169 000 211 000 259 000 294 000

Yield load for property classes 5.6 5. 8 6.8 [N] [N] [N] 2 700 3 700 4 200 4 300 6 000 6 900 6 100 8 500 9 700 11 000 15 500 18 000 17500 24 500 28 000 25 500 36 000 41 000 35 000 49 000 55 000 47 000 66 000 76 000 58 000 81 000 92 000 74 000 103 000 118 000 91 000 127 000 146 000 106 000 148 000 170 000 138 000 193 000 221 000 169 000 236 000 270 000 208 000 292 000 333 000 245 000 343 000 392 000 12 000 16 500 19 000 19 500 27 000 31 000 18 500 26 000 29 500 28 000 39 000 45 000 26 500 37 000 42 000 38 500 53 000 60 000 50 000 70 000 80 000 65 000 91 000 104 000 82 000 114 000 131 000 100 000 140 000 160 000 115 000 161 000 185 000 149 000 209 000 238 000 187 000 261 000 298 000 229 000 320 000 365 000 260 000 364 000 416 000

8.8 [N] 5 700 9 100 13 000 23 500 37 500 54 000 74 000 101 000 127 000 162 000 200 000 233 000 303 000 370 000 459 000 540 000 25 000 41 000 39 000 59 000 57 000 80 000 107 000 143 000 180 000 220 000 254 000 328 000 410 000 502 000 571 000


T9

10. 9 [N] 8 300 13 500 19 000 35 000 55 000 79 000 108 000 148 000 181 000 231 000 285 000 332 000 432 000 528 000 653 000 768 000 37 000 61 000 58 000 87 000 83 000 118 000 157 000 203 000 256 000 313 000 361 000 467 000 584 000 716 000 814 000

All rights reserved


P.O.Box 261



Estimation of screw diameters

(according to VDI* 2230)

The following procedure enables an estimation of screw diameter depending on the operating force at temperature of 20°C (15° - 25°C) and on tightening method. The result has to be double checked by either exact calculation or testing the joint.

12.9 [N] 9 700 16 000 22 000 40 000 64 000 93 000 127 000 173 000 211 000 270 000 334 000 389 000 505 000 618 000 764 000 899 000 43 000 71 000 68 000 102 000 97 000 138 000 184 000 238 000 299 000 367 000 423 000 546 000 684 000 838 000 952 000


P.O.Box 261



Estimation of screw diameters

(according to VDI* 2230)

The following procedure enables an estimation of screw diameter depending on the operating force at temperature of 20°C (15° - 25°C) and on tightening method. The result has to be double checked by either exact calculation or testing the joint. Special conditions as mentioned e.g. on page T 10, are not taken into consideration for this estimation. 1

Force in N

2

3

4

Nominal diameter in mm Property class 12.9

250 400 630 1 000 1 600 2 500 4 000 6 300 10 000 16 000 25 000 40 000 63 000 100 000 160 000 250 000 400 000 630 000

A Choo Choose se the next higher higher force force value to operating force F A, Q acting on the bolted joint.

10.9

8 .8

B Th Thee requ require iredd minim minimum um preloa preloadd force force F M min is found by proceeding from this force with: l 4 steps for static or dynamic transverse shear force,

or 3 3 4 4 5 6 8 10 12 16 20 24 30 36

3 3 4 5 6 8 10 12 14 16 20 27 36

3 4 5 5 8 8 10 14 16 20 24 30

Example: A joint is dynamically and eccentrically loaded by the axial force F A = 5800 N. A screw with property class 8.8 is to

l 2 steps for dynamic and eccentric axial force,

or

l 1 step for either dynamic and concentric or static and eccentric axial force,

or

l 0 step for static and concentric axial force.


P.O.Box 261



Fatigue strength In the first loaded thread of a screw there is a strong notch effect. Dynamic stress (may it be from axial , bending or torque load) reduces the capacity of a threaded fasteners to a fraction of the strength under static conditions. Independent from value of the static load and independent from the property class of the screw, the fatigue strength of threaded fasteners is between ± 40 and ± 70 N/mm2. Thread heat treated after threading (eh)

Fatigue strength (N/mm2) ± Q Aeh < 0,75

threaded after heat treating ± Q Aet < (et)

(

Range (standard value only)

180

Fv

+ 52 d

)

(2 F ) · QAeh 0,2

Preload depending no

0,2F0,2 < Fv < 0,8F0,2 yes


P.O.Box 261



Property classes The symbol for the property classes of bolts, screws and studs consists of two numbers separated by a point. The first number, when multiplied by one hundred, indicates the nominal tensile strength in newtons per square millimeter. The second figure, multiplied by ten, states the ratio between the lower yield stress and the nominal tensile strength (yield stress ratio) as a percentage. The multiplication of these two figures will give one tenth of the yield stress in newtons per square millimeter. Example of a screw in property class 5.8 Nominal tensile strength 5 ¥ 100 = 500 N/mm2 (MPa) Yield stress ratio 8 ¥ 10 = 80% Yield stress 80% of 500 500 = 400 N/mm N/mm2 (MPa)

For nuts, the main characteristic property is the thread stripping strength (proof stress). The property classes of nuts are designated by a figure to indicate the maximum appropriate property class of bolts with which they may be mated. Thus, nut property class is the same as the first figure of the bolt designation.

Internationally, mechanical stress is expressed in newtons per square area, in bolting N/mm 2. US practice is to use the term megapascal (MPa), which correspond to N/mm2. Ex. 500 /mm2 = 500 MPa In this cataloque the term N/mm2 is used only.


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Mechanical properties of bolts, screws, and studs according DIN-ISO 898, part 1 Property (at 20 °C)

3.6

4.6

4.8

Property class 5.8 6.8

5.6

12.9

600

1000

1200

nominal

30 0

Rm4), 5), N/mm2

min. min. max. ma x.

330 33 0 95

400 420 500 520 120 130 155 160 220 (250 at the screw end)

600 190 250

800 250 320 3 20

830 255 335

900 290 360 36 0

1040 320 380 38 0

1220 385 435

min. max. ma x.

90

114 124 147 152 209 (238 at the screw end)

181 238

238 304 3 04

242 318

276 342 34 2

304 361 36 1

366 414

min. HRB min. HRC max. HRB max. HRC

52 –

67 71 79 82 – – – – 95,0 (99,5 at the screw end) – – 18 0 240 320 300 400

89 – 99,5

– 22 – 32

– 32 – 39

– 39 – 44

480

–

–

–

190 19 0

480

– 640

– 640

– 720

– 900

– 1080

640 0,91

660 0,91

720 0,90

940 0,88

1100 0,88

HV, F $ 98 N Brinell hardness HB, F = 30 D2 Rockwell hardness HR Surface hardness, HV 0,3 Lower yield stress, R el 7), N/mm2

Stress at 0,2% non-proportional elongation, Rp 0,2, in N/mm 2 Stress ratio Stress under proof load S p Elongation after fracture, A Reduction of area after fracture Strength under wedge loading 5) Impact strength, J Head soundness

nominal min. nominal min. Sp / ReL or Sp / Rp 0,2 N/mm2 min. % min. %

min.

Minimum height of non-decarburized non-decarburized thread zone, E Maximum depth of mm complete decarburization, G 1

240

500

10.9

Tensile strength,

Vickers hardness hardness

400

8.8 1) 9.8 3)  "d > M 16 M 16 2) 800 800 900

340

300

420

– – 0,94

0,94

0,91

0,93

0,90

0,92

– – 23 28 – – 34 37 see foot note 6) – –

180 18 0 225 225 310 280 380 440 580 600 650 650 830 970 25 22 – 20 – – 12 12 10 9 8 – 52 52 48 48 44 The values for full size bolts and screws (not studs) shall not be smaller than the minimum values for tensile strength. – 25 – 30 30 25 20 15 no fracture fracture – –

1

2

/2 H 1

/3 H 1

3

/4 H 1

0,015

) For bolts of property class 8.8 in diameters diameters d 16 mm, there is an increased risk of nut stripping stripping in the case of of inadvertent over-tightening over-tightening


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Minimum breaking torques (M ) B min for bolts and screws of property classes according DIN-ISO 898/1 Thread diameter

Pitch P mm

Minimum breaking torque MB min for property class Nm

5.8

8.8

10.9

12.9

M 1

0,25

0 ,0 2 2

0,033

0,040

0,045

M 1,2

0,25

0 ,0 5

0,075

0,092

0,10

M 1,4

0 ,3

0 ,0 8

0,12

0,14

0 ,1 6

M 1,6

0,35

0,11

0,16

0,20

0,22

M 2

0 ,4

0,25

0,37

0,45

0 ,5 0

M 2,5

0,45

0 ,5 5

0,82

1,0

1 ,1

M 3

0 ,5

1 ,0

1,5

1,9

2 ,1

M 3,5

0 ,6

1 ,6

2,4

3,0

3 ,3

M 4

0 ,7

2 ,4

3,6

4,4

4 ,9

M 5

0 ,8

5 ,1

7,6

9,3

10

M 6

1

8 ,7

13

16

17

M 8

1,25

22

33

40

44

–

25

38

46

52

1,5

44

66

81

90

M 8

×

1

M 10 M 10

×

1

–

56

84

102

114

M 10

×

1,25

–

50

75

91

102

Materials for nuts


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Materials for bolts, screws and studs Property class

Materials and treatment

Chemical composition limits (check analysis) % C

3.61) 4.61) 4.81) 5.61)

9.8

10,9 4)

10.9 5)

12.9 5), 6)

B9) max.

min.

max.

–

0,20

0,05

0,06

0,003

–

0,55

0,05

0,06

0,003

Carbon steel

5.81) 6.81) 8.82)

S max.

P max.

Carbon steel with additives (e. g. Boron or Mn or Cr), quenched and tempered or Carbon steel quenched and tempered Carbon steel with additives (e.g. Boron or Mn or Cr), quenched and tempered or Carbon steel quenched and tempered

– 0,153)

0,55

0,05

0,06

0,003

–

0,55

0,05

0,06

0,003

0,153)

0,40

0,035

0,035

0,253)

0,55

0,035

0,035

0,153)

0,35

0,035

0,035

0,253)

0,55

0,035

0,035

Carbon steel with additives (e. g. Boron or Mn or Cr), quenched and tempered

0,153)

0,35

0,035

0,035

Carbon steel quenched and tempered or Carbon steel with additives (e. g. Boron or Mn or Cr), quenched and tempered or Alloy steel quenched and tempered7)

0,253)

0,55

0,035

0,035

0,203)

0,55

0,035

0,035

Alloy steel quenched and tempered7)

Tempering temperature °C min.

0,003

425

0,003

425

0,003

340

425 0,203)

0,55

0,035

0,035

0,003

0,283)

0,50

0,035

0,035

0,003

380


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Mechanical properties for nuts according DIN (only valid for DIN 934/DIN 985) DIN 267/part 4 Mechanical properties

Property class 4

5

6

8

10

12

Nominal proof load stress

N/mm2

400

500

600

800

1000

1200

Vickers hardness … HV 5

max.

302

302

302

302

353

353

Brinell hardness … HB 30

max.

290

290

290

290

335

335

Rockwell hardness … HRC

max.

30

30

30

30

36

36

Mechanical properties for nuts according ISO (for all other DIN-ISO-nuts) ISO 898/part 2 Property class Nominal size (thread diameter) mm over

to

04 Stress under proof load Sp N/mm2

05

HV

Stress under proof load Sp

min. max.

N/mm2

Vickers hardness

5

HV

Stress under proof load Sp

min. max.

N/mm2

Vickers hardness

–

4

520

4

7

580

7

10

10

16

16

39

39

100

380

–

188

302

500

272

353

– Property class

590

6 Vickers hardness HV 1) min. max.

Stress under proof load Sp N/mm2

Vickers hardness HV 1) min. max.

600 670

130 302

610

680

150 302

700

630

146

720

170

–

128

–

142


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Mechanical properties for fine thread nuts according DIN-ISO ISO 898/part 6 Property class Nominal size (thread diameter)

04 Stress under proof load

mm

05 Vickers hardness

Stress under proof load

HV 30

over

to

7

10

10

16

16

33

33

39

Sp N/mm2

380

min. max.

188

302

5 Vickers hardness


HV 30 Sp N/mm2

500

min. max.

272

353

6

Sp N/mm2

Vickers hardness HV 30 1) min. max.

690

175

720

190



Sp N/mm2 770

302

188

780

302

870

233

920 Property class

Nominal size (thread diameter mm over to 7

10

10

16

16

33

33

39

8 Stress under proof load Sp N/mm2 9551) 8902) 10301) 10901)

10

12

Stress Vickers hardness under Vickers hardness HV 30 proof HV 30 load 1) + 2) 1) + 2) Sp min. max. N/mm2 min. max. 11001) 1 2 1 2 2) 2951) 2502) 353 250 ) 195 ) 353 ) 302 ) 1055 11101) 10552) 2951)

3531)

1) Nuts style 1 (ISO 8673/DIN 971 part 1) < 0,8 d nuts 2) Nuts style 2 (ISO 8674/DIN 971 part 2) < 1,0 d nuts

10802)

2602)

353

Stress under proof load Sp N/mm2


1200

295

353

–

–

–


P.O.Box 261



Steels for low and high temperature applications Temperatures from –253 to –1 –10 0 °C Material Designation

Material number

26 CrMo 4

1.7219

12 Ni 19

1.5680

X 12 CrNi 18 9

1.6900

X 10 CrNiTi 18 10

according to

Symbol

Guideline for lower standard limit of temperature in continuous operation2)

KA

– 65 °C

KB

– 140 °C

KC

– 253 °C

1.6903

KD

– 253 °C

X 5 CrNi 18 9

1.4301

A21)

– 196 °C

X 5 CrNi 19 11

1.4303

A21)

– 196 °C

X 10 CrNiTi 18 9

1.4541

A21)

– 196 °C

X 5 CrNiMo 18 10

1.4401

A41)

– 60 °C

X 10 CrNiMoTi 18 10

1.4571

A41)

– 60 °C

steel-iron standard 680

ISO 3506/part 1 resp. AD-W 10

1)If there is space enough on the fastener, fastener, it has to be marked with the property class additionally to the steel grade A2 and A4: e.g. A2-70 (see ISO 3506/part 1). If a specific steel is required the fastener has to be marked with the standard standard number number or the designation. designation. This is valid also for fasteners larger than M 39 . 2)Refer to the DIN worksheet W 10 and the steel-iron-standard 680.

Temperatures from –10 to +300 °C Hot yield-point (as information only, not subject to acceptance inspection) Temperature 20 °C

100 °C

200 °C

250 °C

300 °C


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Temperatures above +300 °C according DIN 17 240 Designation

Material number

Symbol

Guideline for upper standard limit of temperature in continuous operation (acc. DIN 17 240)

C 35 N2)

1.0501

Y

+ 350 °C3)

Ck 35

1.1181

YK

+ 350 °C3)

Cq 35

1.1172

YQ

+ 350 °C3)

24 CrMo 5

1.7258

G

+ 400 °C4)

21 CrMoV 5 7

1.7709

GA

+ 540 °C3)

40 CrMoV 4 7

1.7711

GB

+ 540 °C 3)

X 22 CrMoV 12 1

1.4923

V6)

+ 580 °C3)

X 19 CrMoVNbN 11 1

1.4913

VW

+ 580 °C3)

X 8 CrNiMoBNb 16 16

1.4986

S

+ 650 °C3)

X 5 NiCrTi 26 15 5)

1.4980

SD

+ 700 °C3)

NiCr 20 TiAl

2.4952

SB

+ 700 °C3)

2) Not Not for for sc scre rews ws or bo bolt lts s 3) For nuts the upper limit of temperature in continuous operation may be 50°C higher. higher. 4) For nuts of steel steel 24 CrMo5 there is no indication indication in DIN 17240 17240 for use at even higher higher temperature. temperature. But, based on the strength of the material and on practical practical experience, this this temperature limit limit may be exceeded according to DIN 17240 section 1.1 (edition July 1976). Indications are given in DIN 2507, part 2. 5) Not mention mentioned ed in DIN 17240 17240 (aero-spa (aero-space ce material material number number 1.4944) 1.4944).. 6) Symb Symbol ol VH for steel steel X 22 CrMoV 12 1 with with highe higherr strength strength (yiel (yield d stress stress R 700 0 N/ N/mm mm2) than ^ 70 p 02 according DIN 17 240.

Suitable mating materials for bolts and nuts Materials B ol t

Nut


P.O.Box 261



Stainless steel Designation system

Steel group

Steel grade

Austenitic

Martensitic

A1 A22) A31) A42) A51)

C1

Ferritic

C4 (C3*)

C5

F1

Property class screws, nuts type 1 low nuts

50 0 25

70 035

80 04 0

50 025

set screws, pins tapping screws

1 2H 2 0H

2 1H 25H

30H

20H s o ft

s o ft

c o ld highworked ssttrength

70 035

110 055

50 025

70 035

30H

25H

40H

hardened and tempered

soft

80 040

hardened hardened an d and tempered tempered

45 020

60 0 30

20 H

2 5H

s o ft

c o ld worked

1)Stabilized by titanium, niobium or tantalum to reduce risk of inter-granular corrosion 2) Low carbon stainless steels with carbon content content not exceeding 0,03% may additionally be marked with an L. Example: Example: A4L - 80 *) For tapping tapping screws screws grade C3 is used.

Ferritic steel group


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Austenitic steel group Chromium-nickel steels which are made resistant to corrosion by the self-generated chromium oxide. If the chromium oxide film is damaged, it will restore itself as long as there is oxygen in the enviroment. However, if access of oxygen is hampered by unfavorable designs or contamination, corrosion will occur. All austenitic stainless steel fasteners are normally non-magnetic; after cold working some magnetic properties may be evident particularly for A2. When there is a risk of inter-granular corrosion, steel grades A3 and A5 (=stabilized steels) or A2L and A4L (=low carbon steel) are recommended. Common stainless grades are: l A2-70 / A4-80 for bolts, screws, studs and nuts l A1-50 for machined pins, slotted set screws, specials A1: Steel type, e.g.: 1.4305 1.4300 Chromium-nickel-steels specially designed for machining. Due to the elevated content of sulphur, the steels within this grade have lower resistance to corrosion than corresponding steels with normal content of sulphur. Weldability is possible but not good. A2: Steel type, e.g.: 1.4301 1.4303 1.4306** (= A2L) 1.431 1.4311 1 (= A2L) Chromium-nickel steels most frequently used (stainless steel). steel). They are suitable for kitchen equipments and apparatus for the chemical industry. Steels within this grade are not suitable for use in non-oxidizing acid and agents with chloride content, i. e. swimming pools and sea water. Good weldability. A3: Steel type, e.g.: 1.4541 1.4550 Stabilized “stainless steels” with properties similar to A2. A4: Steel type, e.g.: 1.4401 1.4435** (= A4L) 1.4436 1.4406** (= A4L) 1.4429** (= A4L) Acid proof steel. steel. Chromium-nickel steels which are molybdenum alloyed and give a considerably better resistance to corrosion than A1, A2 and A3. A4 is used to a great extent by the cellulose industry as this steel grade is developed for boiling sulfuric acid (thus given the name “acid proof”) and is to a certain extent also suitable in an environment with chloride content. A4 is also frequently used by the food processing industry and by the marine industry. Good weldability. A5: Steel type, e.g.: 1.4571 1.4580 Stabilized “acid proof steels” with properties similar to A4. Other types: Steel type e.g.: 1.4439 1.4539 1.4529 1.4565 1.4426 Austenitic stainless steels with particular resistance to chloride induced stress corrosion. The risk of failure of bolts, screws and studs due to chloride induced stress


P.O.Box 261



Stainless steel grades Mechanical properties according DIN-ISO 3506 Steel group

Steel grade

Property class

Diameter range

Bolts

Tensile strength s t u n w o l

Austenitic

A1 A 2, A 4 A 3, A 5

C1 Martensitic

C3 C 4

Ferritic

F 13)

504) 704) 804) 1004) 12 H 21 H 504) 704) 1104) 804) 504) 70 454) 60

025 035 040

025 055 040 035 020 030

M 395) < M 24 5) < M 245) < M 16 5) < M 24 5) < M 24 5) <

Rm1) N/mm2 min. 500 700 800 1000

500 700 1100 800 500 700 450 600

Stress 0, 0,2% Elongation permanent after strain fracture Rp 0,21) N/mm2 min. 210 450 600 750

250 410 820 640 250 410 250 410

AL2) mm min. 0,6 d 0,4 d 0,3 d 0,25 d

0,2 d 0,2 d 0,2 d 0,2 d 0,2 d 0,2 d 0,2 d 0,2 d

Nuts

Bolts and nuts

Stress un under proof load

Hardness

Sp N/mm2 500 700 800 1000

500 700 1100 800 500 700 450 600

s t u n w o l

HV min. max.

250 350 400

250 350 550 400 350 200 300

125 200 210 – 155 220 220 330 350 440 240 340 155 220 220 330 135 220 180 285

1) The tensile stress is calculated on the thread stress area. 2) To be determined on the actual screw length and not on a prepared test piece. d = nominal diameter. 3) For grade F 1 diameter M 24 is maximum. 4) Not in the standard: A4 - 100 in production quantity upon request. 5) For fasteners with nominal thread diameters d > 24 mm the mechanical properties shall be agreed upon between user and manufacturer.


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Coefficients of friction for the bearing area (bolt or nut) and the thread m total Nut A2 or A4

Bolt: cold formed A2/A4 rolled thread

plain

type of joint

plain or slighly lubricated

MoS2 lubricated

hard

0,20 (to 0,30)

0,10 (to 0,14)

soft

0,30 (to 0,50)

0,16 (to 0,20)

Preload Fv and tightening torque Ma for screws and nuts with bearing surfaces according to ISO 4762/4014, 4017, resp. 4032/DIN 912, 931, 933 resp. 934 m

Thread diameter

Preload

tot. = 0,10 Tightening torque

Fv in N

m

Preload

A2-50 A4-50

A2-70 A4-70

A2-80 A4-80

MA in Nm A2-50 A4-50

M4 M5 M6 M8 M10*

1400 2260 3200 5900 9400

3000 4800 6800 12500 20000

4000 6500 9100 16800 26700

0,8 1,6 2,7 6,6 13

M12* M14* M16 M18 M20

13600 18700 25800 32200 41300

29200 40000 55200 69000 88600

38900 53400 73600 91800 118000 11

23 36 56 80 112

49 77 120 175 240

M22** M24 M27 M30

51800 59700 78400 95500

109000 A) 128000 A) – –

– – – –

150 195 285 400

315 A) 412 A) – –

M8 x1 M10 x1,25* M12 x1,25* M12 x1,5* M14 x1,5*

6400 10000 15300 14400 20700

13800 21500 32800 31000 44300

M16 x1,5 M18 x1,5 M20 x1,5 M22 x1 x1,5** M24 x 2

28000 37400 47300 58400 66600

M27 x 2 M30 x 2

86600 109000

18400 28700 43700 41300 45900

60000 80200 80000 11007000 100000 1350000 122000 A) – A) 140000 – – –

– –

7,2 14 25 24 39

tot. = 0,20 ( m thr = 0,25, m hd = 0,16) Tightening torque

Fv in N

MA in Nm A2-50 A2-70 A4-50 A4-70

A2-70 A4-70

A2-80 A4-80

A2-50 A4-50

A2-70 A4-70

A2-80 A4-80

1,7 3,4 5,8 14 28

2,3 4,5 7,8 19 36

1110 1790 2560 4720 7520

1700 2700 5500 10200 16800

3200 5100 7500 13500 13 21400 21

10900 15000 20500 26000 33200

23400 32100 44000 55600 71100

3311200 42800 58600 74100 94800

35 55 86 124 12 173 17

75 119 189 265 373

– – – –

238 297 443 605

495 A) 641 A) – –

65 103 160 230 320 – – – –

41500 88000 A) 48000 102000 A) 63100 – 76900 –

15 30 53 51 84

21 39 70 68 113

5150 8100 12300 11700 16600

1144700 23000 35300 33200 47600

11 22 38 37 61

60 90 125 165 210

126 190 265 351 A) 446 A)

170 255 350 – –

22700 48200 64300 30400 65200 86800 38300 82000 109100 10 47200 100000 A) – A) 54000 11 115000 5000 –

300 430

– –

70000 88600

– –

11000 17300 26400 24910 35700

1,2 2,4 4,1 10 21

– –

– –

2,6 5,1 8,7 22 43

A2-80 A4-80 3,5 6,8 12 29 57 99 157 249 351 497 – – – –

24 46 82 78 130

31 60 108 104 173

91 1 41 14 200 265 330

195 303 421 556 A) 709 A)

259 400 562 – –

486 681

– –

– –


P.O.Box 261



Stainless steel grades Chemical composition

Group

Austenitic

Martensitic

Ferritic AusteniticFerritic

Chemical composition, mass content % 1) P S Cr Mo7) Ni

Grade

C

Si

Mn

A1

0,12

1,0

6,5

0,200

0,15–0,35

16–19

0,7

A2

0,1

1,0

2,0

0,0500 0,05

0,03

15–20

A3

0,08

1,0

2,0

0,045

0,03

A4

0,08

1,0

2,0

0,045

A5

0,08

1,0

2,0

C1

0,09–0,15

1,0

C3

0,17–0,25

C4 F1 FA14)

Cu

Notes

5–10

1,75–2,25

–

8–19

4

2) 8) 13) 6) 9) 12)

17–19

–

9–12

1

0,03

16–18,5

2–3

10–15

1

0,045

0,03

16–18,5

2–3

10,5–14

1

1,0

0,0500 0,05

0,03

11,5–14

–

1

–

1,0

1,0

0,0400 0,04

0,03

16–18

–

1,5–2,5

–

0,08–0,15

1,0

1,5

0,060

0,15–0,35

12–14

0,6

1

–

0,12

1,0

1,0

0,0400 0,04

0,03

15–18

–

1

–

2) 5) 6) 10) 11)

0,03

1,7

1,5

–

–

18–19

2–2,7

4,5–5

–

N = 0,07

0,03

1,0

2,0

–

–

21–23

2,5–3

5–5,5

–

N = 0,14

3) 4) 8) 5) 12) 3) 4) 5) 5)

01) Values are maximum unless otherwise indicated. 02) Sulphur may be replaced by selenium. 03) Must contain titanium > 5 x C up to 0,8% maximum for stabilization, or4). 04) Must contain niobium (columbium) and/or tantalum > 10 x C up to 1% maximum for stabilization, or 3). 05) At the option of the manufacturer the carbon content may be higher where required to obtain the specified mechanical properties at larger diameters, but shall not exceed 0,12% for austenitic steels. 06) Molybdenum may also be present at the option of the manufacturer. 07) If for some applications a maximum molybdenum content is essential, this must be stated. 08) If the nickel content is below 8%, the minimum manganese content must be 5%. 09) If the chromium content is below 17%, the minimum nickel content should be 12%. 10) May contain titanium > 5 x C up to 0,8% maximum. 11) May contain niobium (columbium) and/or tantalum > 10 x C up to 1,0% maximum. 12) For austenitic stainless steels having a maximum carbon content of 0,03%, nitrogen may be present to a maximum of 0,22%. 13) There is no minimum limit to the copper content providing that the nickel content is greater than 8%. 14) For information only, will most probably be included in the future.


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Table of Resistance Material Nr. Corrosive Agent

Concentration

Acetic acid

L

10 % CH3 COOH

50 %

Acetic acid

100 %

Acetic acid

10 % & 50 % + hydrogen peroxide CH3 COOH + H2O2

Acetic anhydride

(CH3 CO)2 O CH3 COCH3

Acetone

Acetyl Chloride CH3 COCI Acetylic acid HOOC.C6H4.OCOCH3 Acid-salt mixtures: H NO3 fuming + 10 % potassium nitrate H NO3 fuming + 10% aluminium nitrate 10 % H2 SO4 + 10 % copper sulphate 10 % H2 SO4 + 2 % ferric-lll-sulphate Aluminium Al Aluminium acetate (CH3 COO)3 Aluminium ammonium sulphate Al (NH4) (SO4)2, 12H2O Aluminium chloride Al CI3, 6H2O Aluminium nitrate Aluminium sulphate

Al (No3)3, 9H2O Al2 (SO4)3, 18H2O

all concentrated -

x

molten saturated saturated 5% 25 % 10 %

x x

saturated Ammonia Ammonium bifluoride Ammonium bicarbonate Ammonium chloride

NH3 NH4 HF2 NH4 HCO3 (sal-ammoniac) NH4 CI

with copper and zinc chlorides

cold saturated 10 % 25 % 50 % saturated saturated cold saturated

x

Temperature

C 4021 4104

C+F 4016 4510 4057

20°C boiling 20°C boiling 20°C boiling 20°C 50°C 90°C 20°C boiling 20°C boiling boiling 20°C boiling

2 2 3 1 3 1 2 3 0 2 1 2 2 0 -

0 2 1 2 0 2 0 0 1 0 1 0 1 1 0 -

A2 4301 4306 4541 430 305 5 4540 0 0 0 1 0 1 0 0 0 0 0 0 0 1 0 1

boiling boiling boiling 750°C 20°C boiling 20°C boiling 50°C 20°C 20°C 20°C boiling 20°C boiling 20°C 20°C boiling boiling boiling 20°C boiling boiling

2 3 3 0 2 3 2 3 0 3 0 1 1 3

1 2 3 0 0 0 1 2 2 3 0 3 0 0 1 0 3

1 0 2 3 0 0 0 3 2 3 0 0 1 1 2 0 0 0 0 1 2 0 2 3

A4 div. 4401 4449° 4404 4577^ 4436 4506+ 457 571 1 453 4539 9* 4435 0 0 0 0 0 1 0° 0 0 0 0 0 0 0 0 0 1 1 0 1 3 0 0 0 2 1 2 0 0 0 0 1 0 0 0 0 1 1 0 1 3

0+° 0+ 2+

0+

1+ 1+


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Corrisive Agent

Concentration

Barium hydroxide

saturated saturated any -

Barium nitrate Beer Benzine (Gasoline) Benzoic acid Blood Boric acid Brandy

Ba (OH)2 Ba (NO3)2

C6 H6 C6 H5 COOH

H3 BO3

Brine

Bromine water

Buttermilk Butyric acid Cadmium Cd Calcium sulphate Calcium sulphite Camphor Carbon dioxide Carbon disulphide Carbon tetrachloride

al l concentrated al l concentrated -

Bromine Br

C3 H7 COOH Ca SO4 Ca SO3 C10 H16 O = carbonic acid C O2 C S2 C Cl4 = tetrachloromethane

Carbonate of ammonia NH4 HCO3 + NH4 CO2 NH2 Carnallite KCl, MgCl2, 6 H2O Cheese Chlorbenzene C5 H5 Cl Chloric acid HCIO3 Chloride of lime Ca (C (CIO IO))2, CaO, 2H2O bleaching solution Chlorine gas Cl gas in dry state

Chlorosulphonate acid

x

-

x

0,03 % 0,3 % 1,0 % 100 %

x x x

saturated cold saturated dry humid water-free cold saturated cold saturated

x

dry dry humid 2,5g Cl/l -

in humid state Chloroform

L

x x

x water-free

CH Cl3 HSO Cl

10 % t t d

x

Temperature

C

C+F

A2

A4

20°C boiling boiling 20°C 70°C 20°C or. boiling 20°C boiling 20°C 20°C boiling 20 °C boiling 20°C boiling 20 °C boiling 20°C 20°C 20°C 20°C

0 0 0 0 1 3 3 1

0 0 0 0 0 0 0 1 0 3 3 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 3 0 1 3 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 3 0 1 3 0

20°C boiling molten 20°C 20°C 20°C hot hot 20°C 20°C boiling 20°C boiling 20°C boiling 20°C 20°C boiling 20°C 20°C 20°C 20°C 20°C 20°C 100°C 20°C boiling 20°C 20°C

2 0 0 1 0 0 0 0 0 2 3 2 3 3 3 3 0 3 3 0 0 3 3

0 2 0 0 1 0 0 0 0 0 2 3 1 2 3 3 3 0 3 3 0 0 3 3

0 1 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 3 0 1 1 0 3 3 0 0 3 0

0 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 3 0 1 0 0 3 3 0 0 3 0

div.

0°

0° 0°

1° 0°


P.O.Box 261



Corrosive Agent

Copper carbonate Copper-ll-cyanide Copper-ll-nitrate

Concentration

2 CuCO3, Cu (OH)2 Cu (CN)2 Cu (NO3)2, 3 H2O

Copper-ll-sulphate

Creosote Cresol Crude oil Curing solution Dichloroethane Dichloroethylene Diethyl ether Disulphur dichloride Drainage water Drainage water Dye bath

Cu SO4, 5 H2O = blue vitriol + 3 % H2 SO4

CH3 C6 H4 OH CH2 Cl . CH2Cl CHCl : CHCl (C2 H5)2 .0 S2 Cl2 = acidic water alkaline or neutral organic acid

weak sulphuric acid or organic + sulphuric acid (H2SO4 below 1%) strong sulphuric acid or organic + sulphuric acid (H2SO4 above 1 %) Ethyl alcohol C2 H5 OH (alcohol) Ethyl chloride C2 H5 Cl 2 Ethyl glycol CH OH-CH2OH Fatty acid = oleic acid C17 H33 COOH Fatty acid Ferric-lll-chloride Ferric-lll-nitrate Ferro-gallic ink Ferrous-ll-sulphate Ferric-lll-sulphate Fluorosilicic acid (= sand acid)

+ traces H2 SO4 Fe Cl3 Fe (NO3)3, 9 H2O Fe (SO4), 7 H2O Fe2 (SO4)3 H2 Si F6

L

hot saturated 50 % all concentrated

x water-free water-free acidic -

all concentrated water-free commercial grade 30 at

30 % 50 % all concentrated 10 % 10 % vapours

x x x

Temperature

20°C boiling 20° C boiling 20°C and boiling 20°C boiling 20°C boiling 20°C 20°C 20°C boiling boiling 20°C boiling 20°C 20°C 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling boiling 20°C 150°C 180°C 235°C 300°C hot 20°C 50°C 20°C 20°C 20°C boiling 100°C

C 4021 4104

C+F 4016 4510 4057

0 3 0 0 0

0 2 0 0 0

0 2 1 2 0 0 1 0 0 1 2 1 1 0 0 0 2 0 2 3 3 3 3 0 1 0 1 3

0 2 1 1 0 0 0 0 0 1 2 0 1 0 0 0 1 0 2 2 3 3 3 0 0 0 1 2

A2 A4 div. 4301 4401 4449° 4306 4404 4577^ 4541 4436 4506+ 430 305 5 457 571 1 4540 4435 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 1 2 2 3 3 0 0 0 0 1

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 2 3 0 0 0 0 1

4539* 45

0+°

0+^

0°


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Corrosive Agent Hydrochloric acid

H Cl

Hydrocyanic acid Hydrofluoric acid Hydrogen chloride

HCN H2F2 H Cl

Hydrogen fluoride

HF

Hydrogen peroxide Hydrogen sulphide

H2 O2

Hydroxylamine sulphate Iodine

dry H2 S (NH2 OH)2 H2 SO4

Iodine, tincture of Iodoform Iron phosphate Lactic acid

CHJ3 (by the bonderizing process) CH3 CHOH COOH

Concentration 0,5% 40 % -

L x

x x x x

gaseous form dry <4

10 % dry humid vapours

x x

1,5 % 10 % 80 % concentrated

Lead 3 Pb Lead acetate = sugar of lead Pb (CH3 COO)2, 3H2O Lead nitrate Pb (NO3)2 Lemon juice Linseed oil + 3 % H2 SO4 Liqueur Lysoform Lysol Magnesium carbonate Mg CO3 Magnesium chloride Mg Cl2, 6 H2O Magnesium sulphate = Epsom salts Mg SO4, 7 H2O Maleic acid (CH CO OH)2

molten all concentrated 10 % 30 % concentrated 50 %

x

Temperature 20°C boiling 20°C 20°C 20°C 50°C 100°C 400°C 100°C

C 3 3 3 3 3 3 3 3

C+F 2 3 0 3 2 2 3 3 3

A2 1 3 0 3 1 1 2 3 1

A4 div. 1 0°+^* 3 0 3 1 1 1 3 1

20°C 20°C 100°C <400°C 20°C boiling 20°C 20°C 20°C 20°C 60°C 98°C 20°C boiling 20°C boiling 20°C boling 20°C boiling 400°C 600°C 20°C boiling 20°C 20°C 20°C 200°C boiling boiling 20°C 20°C 20°C 20°C boiling 100°C

0 0 0 2 0 2 2 0 0 1 1 1 3 1 3 1 3 1 1 0 0 0 0 0 2 2 2 0

0 0 0 2 0 2 2 0 0 0 0 1 1 3 1 2 1 2 0 0 0 0 0 0 0 0 1 1 1 0

0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 2 0 2 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0°

0+ 0+ 0+


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Corrosive Agent

Concentration

Mixed acid (nitrating acids)

Monochloroacetic acid Mustard Nickel chloride Nickel nitrate Nickel sulphate Nitric acid

CH2 Cl COO H Ni Cl2, 6 H2O Ni (NO3)2, 6 H2O Ni SO4, 7 H2O H NO3

50 % H2SO4 + 50 % HNO3 75 % H2SO4 + 25 % HNO3 20 % H2SO4 + 15 % HNO3 70 % H2SO4 + 10 % HNO3 30 % H2SO4 +5% HNO3 15 % H2SO4 +5% HNO3 2 % H2SO4 +1% HNO3 50 % 7% 10 % 25 % 37 % 50 % 66 %

Nitrous acid Nitrous acid 60° Nitrous vitreol content 4 5 %

H NO2

99 % (Hoko) concentrated -

L

x x x

Temperature

C 4021 4104

C+F 4016 4510

A2 A4 4301 4401 4306 4404

4057

4541 4436 4506+ 430 43 05 45 457 71 45 4539* 4540 4435 0 0 1 1 2 2 1 0 1 1 3 3 0 0 1 0

50°C 90°C 120°C 50 % 90°C 157°C 50°C 80°C

3 3 3 3 3 3 3 3

2 3 3 2 3 3 3 3

50°C 90°C 168°C 90°C 110°C

3 3 3 3 3

3 3 3 3 3

0 1 3 0 1

0 0 3 0 0

134°C

3

3

1

1

boiling

3

3

2

0

20°C 20°C 20°C 20°C 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C 20°C 75°C

3 2 0 -

3 0 -

3 0 1 0 0

3 0 1 0 0

0 1 0 1 0 2 0 2 0 2 0 3 2 3 0

0 0 0 1 0 1 0 1 0 1 0 2 1 3 0

0 0 0 0 0 0 0 0 0 1 0 0 1 2 0 0

0 0 0 0 0 0 0 0 0 1 0 1 2 2 0 0 1

div. 4449° 4577^

1+


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Corrosive Agent Phosphoric acid (pure)

Concentration 1% H3 PO4

L

10 % 45 % 60 % 70 % 80 % concentrated

Phosphorous pentoxide

P2 O5

Photographic developer Photographic fixer Picric acid C6 H2 (NO2)3 OH Potassium acetate CH3 COO K Potassium aluminium sulphate = alum KAL (SO4)2, 12 H2O Potassium bichromate Potassium bifluoride Potassium bisulphate

K2 Cr2 O7 KHF2

Potassium chloride Potassium chloride Potassium chrome alum Potassium cyanate Potassium cyanide Potassium cyanoferrate (lll)

cold saturated 2% 5% 15 % -

Potassium bisulphite

Potassium bromide Potassium chlorate Potassium carbonate

x

25 %

K H S O4

Potassium bitartrate

dry or humid all concentrated 10 % hot saturated

Ca H2 (SO3)2 = sulphite lye = tartar K H C4 H4 O6 K Br K Cl O3 K2 CO3 = potash Ca Cl2, 6 H2O K Cl = chrome alum KCr (SO4)2, 12 H2O KOCN KCN K [Fe (CN) ]

20 at hot saturated hot saturated -

x

cold saturated

x

hot saturated 5% hot saturated

x

Temperature 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C

C 1 2 2 2 3 2 3 2 3 2 3 2 3 -

C+F 0 1 1 2 2 2 2 3 2 3 2 3 2 3 -

A2 0 0 0 0 0 2 0 2 0 2 1 3 1 3 1

A4 0 0 0 0 0 1 0 1 0 2 0 2 0 3 0

20°C 20°C 20°C molten 20°C boiling 20°C boiling 20°C boiling 20°C 90°C 20°C 90°C 90°C 20°C boiling 200°C cold boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C boiling 20°C 20°C 20°C boiling

1 3 1 2 2 3 0 3 3 2 3 3 0 1 1 3 2 3 0 0 0 0

0 3 0 0 2 2 3 0 2 2 2 3 3 0 0 0 0 0 1 2 3 0 0 0 0

0 1 0 0 0 1 0 3 0 0 0 3 1 3 3 0 2 3 0 2 0 0 0 0 0 1 0 0 0 3 0 0 0 0

0 0 0 0 0 0 0 2 0 0 0 2 0 2 2 0 0 0 0 1 0 0 0 0 0 1 0 0 0 3 0 0 0 0

div.

1+0* 1+0* 1+0* 1+*

1+

0+ 0+^ 1+

0+

0° 0° 0+ 1+


P.O.Box 261



Pyrogallic acid Quinine sulphate Salicyclic acid Sauerkraut pickle Silver bromide Silver chloride Silver nitrate Spinning bath (viscous bath) Soap Sodium acetate Sodium bicarbonate Sodium bisulphate Sodium bisulphite Sodium bromide Sodium carbonate

Concentration

= pyrogallol C6 H3 (OH)3 HO C6 H4 COOH Ag Br Ag Cl Ag No3 H2 SO4 H2 SO4 CH3 COO Na, 3 H2O Na H CO3 Na H SO4, H2O Na H SO3 Na B r Na2 CO3, 10 H2O

Sodium chlorate Sodium chloride

Na Cl O3 Na Cl = table salt

Sodium chlorite Sodium fluoride Sodium hydrogenphosphate Sodium hydroxide

Na Cl O2 Na F Na2 HPO4, 12 H2O

L

al l concentrated 10 % fused mass up to 10 % ovet 10 % saturated jede 10 % 50 % 20 % 10 % cold saturated fused mass 30 %

x

cold saturated

x

x x x

x x

hot saturated 5% 5% 25 %

= caustic soda

Sodium hypochlorite

Na O H Na Cl O = bleach

Sodium nitrate Na NO3 = sodium salpeter Sodium nitrite Na NO2 Sodium p-toluensulphonchloramine = chloramine-T CH3 C6 H4 SO2 NCINa, 3 H2O S O O

50 % fused mass 5 % fused mass hot saturated -

x

Temperature

C

C+F

A2

4021 4104

4016 4510 4057

4301 4306 4541 4305

20°C

-

0

20°C 20°C 20°C boiling 250°C 70°C 70°C 20°C boiling 20°C boiling boiling 80°C boiling boiling 900°C 20°C and boiling 20°C 100°C 100°C 20°C boiling 20°C boiling

0 0 3 3 3 0 0 0 0 0 3 -

0 0 0 3 0 2 3 3 0 0 0 0 0 3 -

0 0 2 0 3 0 0 2 3 0 0 0 1 0 0 0 3 0

0 0 1 0 3 0 0 1 3 0 0 0 0 0 0 0 3 0

1 2 3 -

0 0 2 0

0 1 1 2 3 0

0 0 1 2 2 0 0

20°C boiling boiling 320°C 20°C boiling 20°C boiling 360°C boiling 20°C and boiling

0 2 3 3 3 3 0 0 0 -

0 2 2 3 2 3 0 0 0 0 -

0 1 2 3 1 1 0 0 0 0 1

0 1 2 3 1 1 0 0 0 0 0

C

A4

div.

4401 44 4449° 4404 4577^ 4436 4506+ 4571 4539*

4540 4435 0 0

0+^ 1+^

0°

0° 1° 2°

0+ 1+ 3+ 0° 1°


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Corrosive Agent Sulphur dry

Concentration molten simmering 1%

Sulphur wet Sulphuric acid H2 SO4

2,5 %

5%

7,5 %

10 %

20 %

40 %

60 %

80 %

98 % concentrated

Sulphurous acid H2 S O3

Sulphurous Gas

SO2 humid, free of SO3

Superphosphate Ca (H2 PO4)2 + Ca So4 + 3 % H2 SO4 Tannic acid

saturated 4at 5 - 8 at 10 - 20 at -

5% = tannin 10 % 50 %

L

Temperature 130°C 445°C 20°C 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C boiling 20°C 70°C 150°C boiling 20°C 135°C 160°C 180° -200°C up to100°C >100°C >300°C 900°C 20°C

C 0 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 3 3 3 3 3 3 3 3 3 3 -

C+F 0 3 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 0 2 3 3 2 2 3 3 2 3 3 3 -

A2 0 2 1 1 1 1 1 1 2 1 1 3 1 1 2 2 2 3 1 2 3 1 2 3 3 3 3 1 3 3 0 2 2 3 0 1 2 2 0 1 1 3 0

A4 0 2 0 0 0 1 0 0 2 0 1 2 0 1 2 1 2 2 1 2 3 1 2 3 2 3 3 1 2 3 0 2 2 3 0 0 1 1 0 0 1 2 0

20°C boiling 20°C boiling 20°C

0 1 0 1 0

0 0 0 0 0

0 0 0 0 0

0 0 0 0 0

div.

0+*

0+* 0+* 1+ 0* 1+ 0+ 1+0* 1+ 0+ 1+0* 1+ 0+ 1+0* 2+ 0+ 1+0* 0+* 1+* 0 1+*

0+ 1+

0+ 0+


P.O.Box 261



Concentration

Vinegar

L

= wine vinegar

Washing powder Waste water (acid-free) Waste water (with traces of sulphuric acid) Water tap water Waterglass (sodium silicate)

-

Water vapour Water vapour with SO2 Water vapour with CO2 Wine

-

(red wine, white wine)

Xylol C6 H4 (CH3)2

Zink Zn Zink chloride

molten -

Zn Cl2 Zink cyanide da dampened with water Zink sulphate

Zn (CN)2 Zn SO4, 7 H 2O

Alcohol A l um Ammonium alum Antichlor Aspirin Bleach Bleach Bleaching solution Bonderizing solution Borax Carbolic acid Caustic potash Caustic soda Chloramine- T Chloride of lime Chloroacetic acid Chrome alum Cynide of potash Developer Epsom salts

= = = = = = = = = = = = = = = = = = =

cold saturated hot saturated

me m ethyl and ethyl alcohol potassium aluminium sulphate aluminium ammonium sulphate sodium thiosulphate so acetylic acid sodium hypochloride so sodium hypochlorite and / chlorite chloride of lime iron phosphate sodium tetraborate phenol potassium hydroxide sodium hydroxide so sodium p-toluensulphonchloramine calcium chloride mono- and trichloroacetic acid potassium chrome alum potassium cyanide photographic developer magnesi m s lphate

x

Temperature

C 4021 4104

20°C boiling to 40°C to 40°C 20°C 20°C boiling 400°C 20°C hot 20°C boiling 500°C 20°C 45°C boiling 20°C 20°C boiling boiling Slaked lime Soda Spirits of wine Sugar of lead Steam Sublimate Sulphite lye Sulphur (II) chloride Sulphur dioxide Tannic Tartar Tetrachloromethane Trisodium Wine vinegar Yellow prussiate of potash

C+F 4016 4510

A2 A4 div. 4301 4401 4449° 4306 4404 4577^

4057

4541 4436 4506+ 430 305 5 4571 571 453 4539 9* 4540 4435 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0

0 2 1 2 0 0 0 0 2 2 0

0 1 0 0 2 0 0 0 0 2 0

3 1 3 1 2

3 1 3 1 2 = = = = = = = = = = = = = = =

3 0 2 3 0 0 0 0

3 0 1 2 0 0 0 0

1° 1°

calcium hydroxide sodium carbonate ethyl alcohol lead acetate water vapour mercury-II-chloride calcium bisulphite sulphur dichloride su sulphurous acid (gas) su tannic acid potassium bitartrate carbon tetrachloride sodium phosphate tert. vinega vi potassium ferrocyanide (II)


P.O.Box 261



Special materials High-perf High -performance, ormance, corrosion and hea heatt resistan resistantt alloys Consult the steel manufacturer for particular applications! Range Rang e of app applic licat ation ion and special properties

Alloy Monel 40 0 K-500

Is especially resistant to hydrochloric and hydrofluoric acids in the unaerated condition. It is 2.4360 successfully utilized in the production of salt. The alloy has good resistance to cavitation and erosion 2.4375 in sea water and brackish water at high flow rates. The alloy is highly corrosion resistant to chlorinated solvents, glass etchants, sulphuric and other acids and almost all alkalis. It is not susceptible susceptibl e to stress-corrosion stress-corr osion cracking. crackin g. It can be used in oxidizi oxidizing ng atmospheres up to 550°C and a little higher in reducing atmospheres. atmospheres. Usable for formed and forged fasteners.

Titanium 99,8% 99,7% 99,6% 99,5%

Alloy used where strength/weight ratio is of prime importance (43 percent lighter than stainless 3.7025 steel). Good fatigue resistance, high corrosion resistance in chemical processing equipment, 3.7035 especially in oxidizing environments. Sea water resistant.

3.7055 3.7065

Hastelloy B B-2 2.4617

Hastelloy C C-4 C-22 C-276

Especially useful for equipment handling hydrogen chloride gas, aluminium chloride catalysts, hydrochloric acid, sulphuric acid, (in the absence of oxidizing contaminants), acetic and phosphoric acids. The alloy all oy can be used in oxizing oxizi ng atmospheres up to 530°C 530°C and in reducing atmospheres or under vacuum vacuu m at temperatures above 815°C. 815°C. It is resistant to grain-boundary grain-bou ndary carbide formation and therefore does not normally require a post-weld heat-treatment. Not recommend for use in strongly oxidizing environments, mineral acids or copper-chloride; see Hastelloy C.

The most versatile nickel-chromium-molybdenum nickel-chromium-molybdenum alloy available today, today, with improved resistance to 2.4610 both uniform and localized corrosion as well as a variety of mixed industrial chemicals. Also exhibits 2.4602 superior weldability. weldability. Outstanding corrosion corrosion resistance in chemical processing equipment, especially especially 2.4819 in strongly oxidizing environments, hot contaminated mineral acids, solvents, chlorine and chlorinecontaminated media media (organic and inorganic), inorganic), dry hypochlorite (chlorine (chlorine dioxide), formic acid, acetic acid, acetic anhydride, sea water and salt solutions. Outstanding resistance in chemical processes containing Fe +++ and Cu++ chlorides. Even after exposure to temperatures in the range of 650 1040°C, the alloy retains high ductility duct ility and corrosion corros ion resistance. resistanc e. It is resistant to the precipitation precipi tation of grain boundary carbides and can thus be put into service without the need for a post-weld heat treatment. Some applications: cellophane manufacturing, nuclear fuel reprocessing, chlorine


P.O.Box 261



Bras Br ass, s, Al Alum umin iniu ium, m, Kup uprod rodur ur (c (cop oppe per) r) Mechanical properties according DIN / ISO 8839 Material

Nominal thread diameter

Tensile strength

R m

mm Symbol

Designation

over

Stress at permanent set limit R

Perc rce entage elongation after fracture A

N/mm2

p 0,2 N/mm2

5 %

min. 160

min. 14

to

–

39

min. 240

– 6 – 6 – 12 –

6 39 6 39 12 39 39

440 370 440 370 470 400 590

340 250 340 250 340 200 540

11 19 11 19 22 33 12

CuZn40MnPb

6

39

440

180

18

CU7

CuAl10Ni5Fe4

12

39

640

270

15

AL1

AIMg3

AL2

AIMg5

AL3

AISi1MgMn

AL4

AlCuMgSi

AL5

AIZnMgCu0,5

– 10 – 14 – 6 – 10 –

10 20 14 36 6 39 10 39 39

270 250 310 280 320 310 420 380 460

230 180 205 200 250 260 290 260 380

3 4 6 6 7 10 6 10 7

AL6

AIZn5,5MgCu

–

39

510

440

7

TI1

TI 99,8

–

20

290

180

30

TI2

TiAI6V4

–

39

890

820

10

CU1

E-Cu57/Cu-ETP

CU2

CUZn37

CU3

CuZn39Pb3

CU4

CuSn6

CU5

CuNi1,5 Si

CU6


P.O.Box 261



Polyamid 66 (nylon®) Mechanical properties (dry) Yield strength N/mm2 (MPa) Elongation % Bending stress max. Elasticity module N/mm 2 Moisture absorption %

Dry 85 N/mm2 30–60% 130 –135 N/mm2 2600–2900 N/mm2 3,4–3,8%

Humid 60 N/mm2 120 –280% – 1700–2000 N/mm2 –

Thermal properties (dry) Smelting temperature Heat resistance briefly, max. Heat resistance continuously

Dry 250 –255 °C 150-170 °C 80 –100 °C

Humid –

Chemical properties: Chemical Resistant against: Acetone, Ammonia 10%, Brandy, Butter, Citric acid 10%, Diesel, Formaldehyde, Fruit juice, Gasoline, Glycerine 90%, hydrogen peroxide, Ink, Mercury, Mercury, Methanol, Milk acid 10%, Mineral oil, Petroleum, Potassium hydoxide 50%, Potassium nitrate 10%, Soap solution 1%, Sodium carbonate 10%, Sodium chloride (salt), Sodium hydroxide 10%, Vaseline, Vegetable oils, Wax, Wine

–

Not resistant against: Acetic acid, Boric acid, Chlorine gas, Chlorine water, Chloroform, Chromium trioxide, Formic acid, Hydrochloric acid, Nitric acid, Ozone, Perchloric acid, Phenol, Phosporic acid, Sulphuric acid, Hot water

Tolerances Tolerances for polyamid (nylon ®) fasteners correspond about to those of steel fasteners multiplied by 2. Tightening torques MA [Nm] (as guideline only) Nominal diameter

M3

M4

M5

M6

M8

M10

M12

M16

Screws Nuts

0,1 0,1

0,2 0,3

0,5 0,6

1,5 1,5

2,5 3,0

3 4

4 6

8 12

Fastening in plastics


P.O.Box 261



Tightening of fasteners see prescription page T 24 below Preload FV and tightening torque Ma for screws and nuts with bearing surfaces according to ISO 4762, 4014, 4017 resp. 4032 / DIN 912, 931, 933 resp. 934 90% of the yield strength is utilized by preload and torque stress mges.

T hr ead diameter

= 0,08

mges.

= 0,10

P r el oa d

Tightening torque

Preload

T ighteni ng tor uqe

FV [ N ]

M A [Nm]

FV [ N ]

M A [Nm]

8.8

10.9

12.9

8.8

10 . 9

12.9

8.8

10.9

12.9

8.8

1 0. 0

12.9

M4 M5 M6

4 350 7 150 10 100

6 150 10 100 14 200

7 400 12 100 17 000

2,1 4,2 7,0

2, 9 6, 0 10

3,5 7,1 12

4 200 6 900 9 750

5 900 9 700 13 700

7 100 11 600 16 400

2,4 4,9 8,0

3 ,3 7 ,0 12

4, 0 8, 0 14

[M 7] M8 [M 9]

14 800 18 500 24 700

20 700 26 100 34 700

24 900 31 300 41 600

12 17 25

16 24 35

20 29 43

14 400 17 900 23 800

20 200 25 100 33 400

24 200 30 200 40 100

13 20 29

19 28 41

23 34 49

M 10 * M 12 * M 14 *

29 500 43 000 59 000

41 400 60 500 82 500

49 700 72 500 99 000

34 60 95

48 84 135

58 100 160

28 400 41 500 56 500

40 000 58 500 80 000

48 000 70 000 96 000

40 69 110 110

56 98 155

67 115 185

M 16 M 18 M 20

81 000 98 500 12 7 000

114 000 138 000 178 000

137 000 166 000 214 000

145 200 285

205 285 400

245 340 480

78 500 95 000 122 000

110 000 1 34 000 1 72 000

132 000 160 000 206 000

170 235 330

240 330 465

285 395 560

M 22 ** M 24 M 27

158 000 183 000 239 000

222 000 257 000 337 000

266 000 308 000 404 000

380 490 720

530 690 1 000

640 830 1 200

152 000 176 000 232 000

214 000 248 000 3 26 000

257 000 298 000 391 0 00

445 445 570 570 840

620 800 1 200

750 960 1 400

M 30 M 33 M 36

292 000 363 000 426 000

410 000 533 000 620 000

493 000 612 000 710 000

980 1 330 1 710

1 400 1 950 2 500

1 650 2 200 2 900

282 000 351 000 412 000

3 97 000 5 16 000 6 05 000

476 0 00 593 0 00 690 0 00

1 150 1 560 2 000

1 600 2 290 2 900

1 950 2 600 3 400

M 39 M 42

510 000 58 0 000

750 000 860 000

860 000 980 000

2 190 2 700

3 200 4 000

3 700 4 600

490 000 560 000

7 20 000 8 30 000

830 0 00 950 000

2 600 3 200

3 800 4 700

4 400 5 400

M 8x1 M 10 x 1,25 * M 12 x 1,25 *

20 200 31 600 48 200

28 400 44 400 68 000

34 100 53 300 81 500

18 36 64

26 51 91

31 61 110

19 500 30 500 46 600

27 000 42 900 65 500

33 000 51 500 78 500

22 42 76

30 59 105

36 71 130

M 12 x 1,5 *

45 400

64 000

76 500

62

87

105

43 900

62 000

74 000

72

100

120


P.O.Box 261



Tightening of fasteners For good functioning of the fasteners, the preload (clamping force) obtained by tightening is of significance. As a principle, fasteners are to be tightened until their lower yield stress value is reached. However, since tightening causes friction and adds additional stress on the fastener, the effective preload is lower than the yield strength. Suitable tightening torques and the resulting preload are shown in the following charts. Friction, however, has a strong influence on these figures. For normal applications (plain, slightly lubricated), start with friction coefficient 0,12 for your calculations. In other cases, refer to the following table to find the friction coefficient range. mtotal = 0,12 Values for high-strength structural bolting are found on page A 53, for stainless steel fasteners see page T 29. Coefficients of friction in the bearing area (bolt or nut) and in the thread mtotal Nut Nut l tapped threads, plain or phosphated l electroplatin electroplating g (zinc in the thread , 4 mm) l nut face according to ISO 4032 / DIN 934 zinc plated plain or phosphated, slightly lubricated

plain

MoS2 lubricated

0,12–(0,18)

0,06–(0,12)

0,12–(0,18)

0,06–(0,12)

Bolt l formed or cut

zinc plated, dacrometized

l bearing surface according to l ISO 4014, 4017, 4762 l DIN 931, 933, 912

black or phosphated with PLUS*)

0,14–(0,20)

zinc plated with PLUS*)

0,14–(0,20)

hot-dip galvanized

0,16–(0,25)

0,12–(0,20)

0,08–(0,12)

*) PLUS coating = the thread is coated with an adhesive as locking feature. Addition: m-values m-values only apply to PLUS-coatings and onmiFIT adhesives. For all other adhesives, especially anaerobic adhesives, use mtotal = 0,20–(0,30) (please consult the manufacturer).

M ARYLA ND M E T R I C S

P.O.Box 261



90% of the yield strength is utilized by preload and torque stress µ T hr ead diameter

tot.

= 0,125

µ tot.

= 0,14

P reload

Tightening torque

Preload

Ti ghtening torque

F V [ N]

M A [Nm]

FV [ N ]

M A [Nm]

8.8

10.9

12.9

8.8

10 . 9

12.9

8.8

10.9

12.9

8.8

1 0. 0

12.9

4 000 6 550 9 250

5 650 9 200 13 000

6 750 11 100 15 600

2,7 5,5 9,5

3, 8 8, 0 13

4,6 9,5 16

3 900 6 350 9 000

5 450 8 950 12 600

6 550 10 700 15 100

2,9 6,0 10

4,1 8,5 14

4, 9 10 17

[M 7] M8 [M 9]

13 600 17 000 22 600

19 100 23 900 31 900

22 900 28 700 38 200

15 23 34

22 32 47

26 39 57

13 200 16 500 22 000

18 500 23 200 30 900

22 200 27 900 37 100

16 25 36

23 35 51

28 41 61

M 10 * M 12 * M 14 *

27 100 39 500 54 000

38 000 55 500 76 000

45 700 66 700 91 300

46 80 125

64 110 180

77 135 215

26 200 38 300 52 500

36 900 54 000 74 000

44 300 64 500 88 500

49 86 135

69 120 190

83 145 230

M 16 M 18 M 20

75 000 90 500 117 000

105 000 127 000 164 000

126 000 153 000 197 000

195 270 385

275 390 540

330 455 650

73 000 88 000 114 000

102 000 124 000 160 000

123 000 148 000 192 000

210 290 410

295 405 580

355 485 690

M 2 2 ** M 24 M 27

145 000 169 000 221 000

205 000 237 000 311 000

245 000 284 000 374 000

510 660 980

720 930 1 400

870 1 100 1 650

141 000 164 000 215 000

199 000 230 000 302 000

239 000 276 000 363 000

550 710 1 050

780 1 000 1 500

930 1 200 1 800

M 30 M 33 M 36

269 000 335 000 394 000

379 000 493 000 578 000

454 000 566 000 665 000

1 350 1 810 2 320

1 850 2 700 3 400

2 250 3 100 3 900

262 000 326 000 382 000

368 000 479 000 562 000

442 000 550 000 646 000

1 450 1 950 2 500

2 000 2 900 3 700

2 400 3 300 4 200

M 39 M 42

470 000 540 000

690 000 790 000

790 000 910 000

3 000 3 700

4 400 5 500

5 100 6 300

460 000 520 000

670 000 7 70 000

770 000 880 000

3 200 4 000

4 800 5 900

5 500 6 800

M 8x1 M 10 x 1,25 * M 12 x 1,25 *

18 600 29 100 44 600

26 200 40 900 62 500

31 500 49 100 75 000

25 49 88

35 68 125

42 82 150

18 100 28 300 43 300

25 500 39 800 61 000

30 600 47 700 73 000

27 52 95

38 73 135

45 88 160

M 12 x 1,5 * M 14 x 1,5 * M 16 x 1,5

41 900 60 500 81 500

59 000 85 000 114 000

70 500 102 000 137 000

83 140 210

115 195 295

140 235 350

40 700 58 500 79 000

57 000 82 500 111 000

68 500 99 000 133 000

90 150 225

125 210 315

150 250 380

M 18 x 1,5 M 20 x 1,5 M 22 x 1,5 **

106 000 134 000 165 000

149 000 189 000 232 000

179 000 226 000 279 000

305 425 570

425 600 800

510 720 960

103 000 130 000 161 000

145 000 183 000 226 000

174 000 220 000 271 000

325 460 610

460 640 880

550 770 1 050

M 24 x 2 M 27 x 2 M 30 x 2

188 000 245 000 308 000

265 000 344 000 433 000

318 000 413 000 520 000

720 1 050 1 450

1 000 1 500 2 050

1 200 1 800 2 500

183 000 238 000 300 000

257 000 335 000 422 000

309 000 402 000 506 000

780 1 150 1 600

1 100 1 600 2 250

1 300 1 950 2 700

M 33 x 2 M 36 x 3 M 42 x 3

379 000 425 000 590 000

557 000 624 000 870 000

640 000 710 000 1 000 000

1 990 2 460 4 000

2 900 3 600 5 900

3 400 4 200 6 700

369 000 413 000 580 000

542 000 607 000 850 000

623 000 690 000 980 000

2 150 2 700 4 300

3 200 3 900 6 300

3 600 4 500 7 300

M4 M5 M6

µ T hr ead diameter

M4 M5 M6 [M 7] M8

tot.

= 0,16

µ tot.

= 0,20

P reload

Tightening torque

Preload

Ti ghtening torque

F V [ N]

M A [Nm]

FV [ N ]

M A [Nm]

8.8

10.9

12.9

8.8

10 . 9

12.9

8.8

10.9

12.9

8.8

1 0. 0

12.9

3 700 6 100 8 600

5 200 8 600 12 100

6 250 10 300 14 500

3,1 6,5 11

4, 4 9, 0 15

5,0 11 18

3 400 5 600 7 900

4 800 7 900 11 100

5 750 9 450 13 300

3,5 7,0 12

4,9 10 17

6 12 20

12 600 15 800

17 800 22 300

21 300 26 700

18 26

25 37

30 45

11 600 14 500

16 300 20 500

19 600 24 500

20 30

28 40

34 50


P.O.Box 261



Preload FV and tightening torque M a for screws and nuts with special torque or bearing surfaces Values for plain or zinc plated fasteners as supplied. Serrated screws and nuts M5

M6

M8

M 10

M 12

M 14

M 16

Property class

Clamped material

Tightening torque M A [Nm]

Screws 8.8 (90)

Steel

9

16

34

58

97

155

215

Cast iron

7

13

28

49

83

130

195

38 300

52 500

73 000

Nuts 8

Preload FV [N] [N] 6350

9000

16 500

26 200

Tightening torque M A [Nm] Screws 10.9 (100)

Steel: Rm 500–1000 [N/mm2]

12

21

44

75

120

185

280

Cast iron

9,5

16

36

64

105

170

260

54 000

74 000

102 000

Nuts 10

Preload FV [N] [N] 9000

12 600

23 200

37 000


P.O.Box 261



Thread forming screws M2

M3

M4

M5

M6

M8

M 10

20

39

10

24

48

max. forming torque MF [Nm] Screws according DIN 7500 case hardened

Steel (sufficient sheet metal thickness assumed)

0,3

1

2,4

4,7

8

Tightening torque M A [Nm] 0,4

1,2

2,8

5,7 Preload FV [N]

900

2 100

3 900

6 400

9 100

16 800

26 700

M3

M4

M5

M6

M8

M 10

M 12

Oval head screws with pressed-on washer (K748)

Tightening torque M A [Nm]

M ARY YL LA N D M M E T RIC S P.O.Box 261 Owings Owing s Mills, MD 21117 USA (410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA

Pre-Loading of high-strength structural bolts Complete sets are only to be used. Hot dip galvanized nuts supplied by us are treated and ready for assembly (coated with molykote). An additional lubrication of screws, nuts or washers is not permissible, since it alters the preload values and leads to failures in assembly. The preload is generally applied by tightening the nut. For this purpose, torque wrenches, impact screwdrivers or similar devices may be used. Tightening via the bolt head requires a free turning shank, so that no additional frictional resistance is developed.

Torque wrench When tightening with a torque wrench, the necessary pre-loading force is provided by applicating a measured torque. The wrench used must be properly adjustable or allow a reliable reading of the required torque. The maximum discrepancy allowed for adjusting and reading should be +0.1 Ma. Testing is to be done before the torque wrench is used and also during use at least every six months.

Impact screwdriver When tightening with impact screwdrivers the necessary preload force is provided by impulses. The screwdriver is to be adjusted to the prescribed preload by tests with suitable equipment (e.g. tensometer) on at least three screws intended for use in the assembly.

Angle of rotation Pre-loading the screws by the angle of rotation method is done by an alignment (“snug”) tightening and then adding a further rotation through the angle ϕ.

M A R Y L A N D M E T R IC IC S P.O.Box 261 Owings Mills, MD 21117 USA (410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Method of tightening

Bolt diameter

Necessary preload Pv in the bolt

Torque wrench

Impact Screwdriver

Tightening torque Ma

Preload Pv

to be applied Bolt lubricated with MoS2 (hot dip galvanized)

Necessary alignment torque

Clamping range

Angle of rotation

Rotation

1)

Mav 1)

lk

O

kN 060

Nm 010

mm

1)

U 1)

110 175

050

0–50

180°

1/2

100

51–100

240°

4/6

200

101–240

270° 3)

3/4 3)

to be applied

Bolt slightly oiled

Angle of rotation method

Nm 2)

M 12

kN 050

0100

Nm 0120

M 16 M 20

100 160

0250 0450

0350 0600

M 22

190

0650

0900

210

M 24 M 27

220 290

0800 1250

1100 1650

240 320

M 30 M 36

350 510

1650 2850

2200 3800

390 560

1) Independent of lubrication of the thread or the surfaces of nut and bolt. 2) For tightening from the head, please ask for data. 3) For bolts M 12–M 22 with clamping range of 171–240 mm, an angle of rotation = 360° or U = 1 is to be applied. Important: Important:

Tightening Tightening torques torques for hot dip galvaniz galvanized ed bolts bolts differ from those those for plain. plain. See table table above. above.

copyright 1999 maryland metrics

A 49

all rights reserved


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA We offer this only as a process applied to our fastener products, not as a separate item. Bolt lubrication

MOLYKOTE ® For high-tensile bolted connections, connections, the most important criterion for effectiveness is the preload. Using torque controlled tightening, friction in the thread and under the bearing face directly influences the attained preload. Bolt lubrication aims to reduce and stabilize friction and minimize the scatter between fastened joints. Additionally,, it will improve the ability to loosen the bolts even after long term operation. In view of the many different Additionally


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA We offer this only as a process applied to our fastener products, not as a separate item. Bolt lubrication

MOLYKOTE ® For high-tensile bolted connections, connections, the most important criterion for effectiveness is the preload. Using torque controlled tightening, friction in the thread and under the bearing face directly influences the attained preload. Bolt lubrication aims to reduce and stabilize friction and minimize the scatter between fastened joints. Additionally,, it will improve the ability to loosen the bolts even after long term operation. In view of the many different Additionally materials for bolts and nuts and the environmental influences, it is understandable that there can not be a single, multi-purpose lubricant. However, However, for common use the plain, slightly oiled surface or zinc plating gives sufficient temporary protection against corrosion and a favourable coefficient of friction. For stainless steel or hot dip galvanized fasteners, for high temperature or critical applications as far as corrosion or preload are concerned, an additional lubrication leads to better performance and higher security of the bolted joints. Low coefficient of friction, high preload l Low variation of friction, equal preload l Additional protection against corrosion

Dry fasteners, clean handling l Assured loosening even after years of operation

l

l

Application

Service temperature – 030 °C to + 125 °C

+ 125 °C to + 300 °C

+ 300 °C to + 600 °C

+ 0600 °C to + 1100 °C

+ 1100 °C to + 1400 °C

l

Low coeffi coefficien cientt of fri friction ction

D G-Rapid plus HSC plus G-Rapid plus D 321R 1000 1000 7405

HSC plus

P 37

l

Low vari variati ation on of fri friction ction

1000 7405

P 37

P 37

l

Protection from cold welding (galling) (gall ing) of of auste austeniti nitic c stainless stainless fassteners during assembly

D D 321R

Protection from seizure of hot dip galvanized bolted connections

G-Rapid plus D 321R D 3484

l l

l l l

1000 P 37

P 37


P.O.Box 261



Reduced load Socket cap screws with low heads For socket cap screws with low heads, with shallow or small sockets, the critical cross section may be underneath the socket and not in the thread. It is recommended not to use such screws in applications where high loads and full preloading are required. Property class 10.9 is used to reduce wear in the socket, it is not to get high-strength application fasteners. Such screws should be tightened by nuts, the socket should be used to prevent rotation of the screws only. In case the screws has to be tightened by the socket, reduced tightening torques should be used. Recommended maximum tightening torques Ma max (Nm) for low head screws or screws with small sockets. steel

ISO 7379 12.9

M 3 M 4 M 5

Æ6

M 6 M 8 M 10 M 12 M 14 M 16

DIN 7984 8.8

DIN 6912 8.8

4, 6

1,0 2 ,3 4,3

2, 3 5,3

Æ8 Æ 10 Æ 12

9, 5 22,0 45,5

7, 5 13, 5 34,5 34 ,5

9,3 19,3 36,3 36 ,3

Æ 16

100,5

Æ 20

200,5

52,5 52,5 80,5 110,5 110 ,5

60,3 60,3 90,3 90 ,3 155,3 155 ,3

M 20 M 24

210,5 350,5

280,3 280,3 440,3 440 ,3

stainless steel

A2 / A4 70

A2 / A4 70

K 323 10.9

ISO 7380 10.9

DIN 7991 10.9

DIN 913–916 45 H

1, 8 5,8

0 ,9 1 ,7 3 ,7

1, 0 2,0 5,0

0, 6 1,5 3,5

6,8 13,8 13 ,8 22,8 22 ,8

8,7 13,7 13 ,7 30,7 30 ,7

8,0 16,0 16 ,0 37,0 37 ,0

6,0 14,0 14 ,0 26,0 26 ,0

60,7 60 ,7

65,0 65,0 100,0 100 ,0 110 10,0 ,0

50,0 50,0 55,0 55 ,0 110 10,0 ,0

165,0 165,0 400,0 400 ,0

210,0 210,0 350,0 350 ,0

A2 / A4 70

A2 / A4 70

105,7 105 ,7

A2 / A4 70


P.O.Box 261



Screw threads, overview Screw threads to DIN standards

Name M ISO-metric thread (60° thread angle)

M ISO-metric thread with interference fit (60° thread angle)

M Metric thread with large clearance (60° thread angle) EG M ISO-metric thread, internal thread for adopting threaded

Designation/ example M 0.8

Nominal diameter

Standard

Application

M 30

0.3 to 0.9 mm 1 to 68 mm

DIN 14, part 1 to part 4 DIN 13, part 1 ISO 68 ISO 261/262 ISO 724/965

Watches and fine work General engineering (coarse thread)

M 20 x 1 M 30 x 2 – LH1) DIN 6630 – M 64 x 4 LN 9163 – M 30 x 2 – 4H5H M 10 Sn 4 M 10 Sk 6

1 to 1000 mm 64 and 76 mm 1.4 to 355 mm 3 to 150 mm

DIN 13, part 2 to part 11 DIN 6630

General engineering (fine thread) Packaging; external thread for barrels Aviation and aerospace

LN 9163

Tap end of studs

not tight

DIN 13 part 51 M 10 Sn 4 tight DIN 2510 – M 36

3 to 150 mm 12 to 180 mm

(draft at present) DIN 2510 part 2

DIN 8140 – EG M 20

2 to 52 mm

DIN 8140 part 2 (draft

tight Bolted connections with reduced shank

Internal thread for adoption of threaded wire inserts


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Screws threads to other standards Name

Identification UNM UN UNC

UNF UNEF UNS UNR UNRC

Unified threads

US thread (old)

Withworth threads

B.A. threads

Parallel pipe threads

UNRF UNREF UNRS

1)

UNC 2) UNF UNEF UNJ UNJC UNJF UNJEF NC NF NEF NS 8 N; 12 N; 16 N BSW

BSF B.A. NPSC NPSM NPSL Dryseal NPSF Dryseal NPSI G3) Rp4) NPT

Designation/example 0.80 UNM

1 / –20 UNC–2A 4 or 0.250 –20 UNC–2A

Standard ASA B 1.10 –1985 ANSI B 1.1 – 1982

Origin USA USA

B.S. 1580: Part 1 & 2 1962 CSA B 1.1 – 1949 ISO 263; 725; 5864

Great Britain Canada

7 / -20 UNRF–2A 14 or 0.4375–20 UNRF–2A

ANSI B 1.1 – 1982

USA

6(0.138)–32 UN UNC–2A

B.S. 1580: Pa Part 3: 3: 19 1965

Great Br Britain

0,250–28 UNJF–3A

B. S. 4084: 1978

12–32 NEF

ANSI B 1.1–1960 replaced by ANSI B 1.1–1982

1 / in.–20 B.S.W. 4

B.S. 84: 1956

11 B.A.

B.S. 93: 1951

1 / –27 NPSC 8

ANSI/ASME B 1.20.1–1983

NPSH 1 / –27 NPSF 8

Great Britain

USA

Great Britain

USA

G 11 / 4 Rp 1 / 2

ANSI B 1.20.3–1976 (R 1982) B.S. 2779: 1973 B.S. 21:1973

3 / –18 NPT 8

ANSI/ASME

Great Britain


P.O.Box 261



ISO metric screw threads Basic dimensions

Table 3 Pitch P

Thread height h 3

Pitch H 1

P

Thread height h 3

H 1

0, 25 0, 3 0, 35

0,153 0,184 0,215

0,135 0,162 0,189

1,25 1, 5 1,75

0,767 0,920 1,074

0,677 0,812 0,947

0, 4 0, 45 0, 5

0,245 0,276 0,307

0,217 0,244 0,271

2 2, 5 3

1,227 1,534 1,840

1,083 1,353 1,624

0, 6 0, 7 0, 75

0,368 0,429 0,460

0,325 0,379 0,406

3, 5 4 4, 5

2,147 2,454 2,760

1,894 2,165 2,436

0, 8 1

0,491 0,613

0,433 0,541

5 5, 5 6

3,067 3,374 3,681

2,706 2,977 3,248


P.O.Box 261




P.O.Box 261




P.O.Box 261




P.O.Box 261




P.O.Box 261



Tolerance for fasteners Tolerance for product grades Feature

Notes A

B

C

Internal thread (nuts)

6H

6H

7H

External thread (screws)

6g

6g

8g

Thread length

For electroplated coatings and hot dip galvanizing, see relevant product and coating standards.

P = pit pitch ch of thre thread ad

b

+ 2 P 0

b

+ 2 P 0

b

+ 2 P 0

Tolerance + 2 P only for such bolts where l s and l g are not fixed in the product standard.

Stud + 2 P 0 b js16 1 b

Nominal length

Type C

js 15 js 16 for slotted and cross recessed screws with length . 50 mm

+ 2 P 0 js17 7 b 1 js1 b

js 17

+ 2 P 0 js17 7 b 1 js1 b

l < 150 : js 17 l . 150 : 2 js 17

*) Only stud end of studs.


P.O.Box 261



Tolerance for product grades Feature

Notes A

B

C

Bearing area

Flange bolts see product standards

w min. = s min. – IT 16 for width across flats , 21 mm d

w min. = 0,95 s min. for width across flats ^ 21 mm d

w max. = s actual

d

thread diameter

c

max.

min.

0,4 0,5 0,6 0,8 1

0,15 0,15 0,15 0,2 0,3

3 and 4 5 and 6 8 to 14 16 to 36 over 36

Height of nuts ^ .

M 12 : h14

M 12 .

%

M 18 : h15

h17

M 18 : h16

Other features d e m

h14

h15

h16

h14

h15

h17

n

H14

H14

H15

Prevailing torque type nuts see product standards

Tolerance for product grades Feature

Notes A

B

C

s

tolerance

Width across flats tolerance

s

30 . 30

%

h13 h14

. 30

%

18

h14 h15 h16 h17 h17

18 % 60 . 60 % 180 180 % 30 . 180 .

Width across corners min. ^ 1,13 s min. e min. ^ 1,12 s min. for flanged bolts and screws and other cold forged heads without trimming operation e

Head height tolerance

k

Head diameter

Head height

js14 js14

js15 js15

h13 *)

h14 **)

M 5 : h13 . M 5 : h14

%

h14

Head diameter

h14 h14

10 ^ 10

1

js16 js17

,

–

) For flang flanged ed hexag hexagon on bolts and screws k is defined only as a maximum.

*)

± IT 13 for knurled heads **) ± IT 14 for for knur knurle led d heads

– – Tapping screws are product grade B

Head height

M 5 : h13 . M 5 : h14

%

1

h14

–

)

For flflat he head screws k is definied only as a maximum.


P.O.Box 261



Tolerance t Feature

for product grades A

B

C

Tolerance t based on dimension

Coaxiality: head to shank / thread

Notes

Tapping screws are product grade A

2 IT 13

2 IT 14

2 IT 15

s

2 IT 13

2 IT 14

2 IT 15

d

2 IT 13

2 IT 14

2 IT 15

*) The datu datum m feature feature must not be partly shank partly thread. If necessary the datum feature d should be displaced at sufficient distance (max. 3P ) from the head of the screw (to avoid thread run-out X).

k

Coaxiality: shank to thread

d

*)

See above

**)) Or le ** leng ngth th of th the e GO-gange of tolerance class 6h 2 IT 13

2 IT 14

–

d


P.O.Box 261



Tolerance t Feature

for product grades

Tolerance t based on dimension

A

B

C

2 IT 13

2 IT 14

2 IT 15

d

2 IT 13

2 IT 14

2 IT 15

d

Notes

Symmetry: splint hole to shank

Symmetry: slot to minor diameter

Tolerance t **) Feature


B

Notes C

Perpendicularity: bearing face to shank / thread

d

1,6

0,05

2 –

2,5 3


P.O.Box 261



Tolerance t Feature


Notes

B

C

Parallelism

0,017 × k’

0,035 × k’ for k’ and m’ see product standards

0,017 × m’

0,035 × m’

Straightness d % 8

.

8

t =

0,002 l + 0,05

t =

–

0,002 l + 0,05

–

d t =

% 8

.

8

– –

2 (0,002 l’ + 0,05) t = 2 (0,0025 l’ + 0,05)

*) Strai Straightn ghtness ess tole tole-rance is applicable only for l’ .


P.O.Box 261



Standard tolerances and deviations


T 66

All rights reserved


P.O.Box 261



Slots (nominal sizes)


P.O.Box 261



Slots (nominal sizes) Metric screws

Æ

M M M M M M M M M M M M M

1 1,2 (1,4) 1,6 (1,8) 2 2,5 (2,3) 3 3,5 4 5 6 8 10 12

DIN DIN DIN DIN

84 85 963 964

0,25 0,3 0,4 0,5 0,6 0,8 1 1,2 1,2 1,6 2 2,5 3

DIN DIN DIN DIN DIN

Wood screws 4 17 427 438 551 553

0,2 0,2 0,25 0,25 0,4 0,4 0,5 0,6 0,8 1 1,2 1,6 2

SN 213328

0,6 0,8 1 1,2

Æ

DIN 95 DIN 96 DIN 97

1,6 2 2,5 3 3,5 4 4,5 5 5,5 6 7 8 10

0,4 0,5 0,6 0,8 0,8 1 1 1,2 1,2 1,6 2 2 2,5

Cross recesses (nominal sizes)

Tapping screws

Æ

DIN 7971 DIN 7972 DIN 7973

2,2 2,9 3,5 3,9 4,2 4,8 5,5 6,3

0,6 0,8 1 1 1,2 1,2 1,6 1,6


P.O.Box 261



Widths across flats, hexagon products Hexagon flanged products

Hexagon products

Æ

M M M M M M M M M M M M

1,6 2 2,5 3 3,5 4 5 6 7 8 10 12

DIN

ISO

DIN

ISO

DIN

DIN

558 601 931 933 934 960 961 7990 7968 571

4018 4016 4014 4017 4032 8765 8676

6914 6915 7999

7412 7414

5 61

heavy < M10

16 18

22

heavy

ISO 4162 EN 1662 EN 1665

781) 782) 783) 781)

nuts ISO 4161 EN 1661 EN 1663 EN 1664 DIN 6923 DIN 6926 DIN 6927

3,2 4 5 5,5 6 7 8 10 11 13 17 19

normal

normal > M10

6921 (EN (EN (EN (EN

DIN – ISO – EN

21

8

8 10 10

10 13 17

13 15 16

7 8

8 10 10

10 13 15 (EN 16) 13 15 (EN 16) 18


P.O.Bo .O.Box x 261



Hexagon sockets (widths across flats) ø

DIN 912 ISO 4762 DIN 6912

1,3 1,5 1,5 2 2,5 3 4 5 6 8 10 12 14 14 17

M 22 22

M M M M M M M

M M M M M M M M M M M M M M M

1,4 1,6 2 2,5 3 4 5 6 8 10 12 14 16 18 20 24 27 30 33 36 42 48

DIN 7984

DIN 7991

DIN 913 914/5/6 ISO 4026 4027/8/9

2 2,5 3 4 5 7 8 10 12 12 14

1,5 2 2,5 3 4 5 6 8 10 10 12 12

0,7 0,7 0,9 1,3 1,5 2 2,5 3 4 5 6 6 8 10 10

17

14

14

12

19 19 22 24 27 32 36

17

14

12

ISO 7379 ISO 7380

2 2,5 3 4 5 6 8

3 4 5 6 8

K 323

2 3 3 4 5

10

10 12

Hexlobular sockets (TORX®) (nominal sizes) Metric screws

Wood screws

Tapping screws


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Recommended core hole diameter d (H11) for thread cutting screws DIN 7513/16 Thread nominal diameter

M 2 ,5

M3

M4

M5

M6

M8

Core hole diameter tolerance H 11

2 ,2

2 ,7

3 ,6

4 ,5

5 ,5

7 ,4

Recommended core hole diameter d (H11) for thread forming screws DIN 7500 (TAPTITE ® ) in materials of hardness up to HB 150 Material thickness

Thread, nominal diameter / nut, sheet material M2

M 2 ,5

M3

M 3, 5

M4

St = steel M5

M6

St, Al, Cu St, Al, Cu St, Al, Cu St, Al, Cu St, Al Al, Cu St, Al, Cu St, Al, Cu

2 mm < 3 mm 4 mm < 5 mm < < 6 mm < 7 mm 8 mm < < 10 mm < 12 mm < 15 mm > 15 mm <

1)

1,80 1,85

2,25 2,30 2,30 2,30 2,35

2,70 2,75 2,75 2,75 2,75

3,20 3,20 3,20 3,25 3,30 3,30 3,30

3,60 3,601 3,65 3,65 3,651 3,70 3,70 3,75

4,50 4,50 4,55 4,60 4,60 4,65 4,65 4,65 4,70

Al = a l u mi n i um

5,40 5,45 5,45 5,451 5,50 5,501 5,55 5,55 5,60

Cu = brass/copper

M8

M 10

St

Al, Cu

St

Al

Cu

7,25 7,25 7.30 7,40 7,40 7,50 7,50 7,50 7,50 7,55 7,60

7,25 7,25 7,30 7,30 7,30 7,40 7,40 7,40 7,50 7,50 7,55

9,20 9,30 7,30 9,30 9,30 9,40 9,40 9,50 9,50 9,50

9,15 9,15 9,20 9,20 9,20 9,30 9,30 9,40 9,40 9,50

9,15 9,15 9,25 9,25 9,30 9,30 9,30 9,40 9,40 9,50

for steel: drill or punch core hole diameter 0,05 mm larger


P.O.Box 261



Application and core hole diameter for tapping screws The following are some guidelines for the use of tapping screws. The types of screw joint illustrated are given as examples. Form C (replacing obsolete form B) tapping screws with cone ends (also known as gimlet points) are most commonly used. This is especially the case when several sheets are being joined, where allowance allowance has to be made for misalignment of the holes. Form F (replacing obsolete form BZ) tapping screws with flat ends are generally only preferred where the screw end lies free and in the case of Form C there would be danger of injury from the point. For simple screw joints, i.e. those in which the tapping screw cuts its own nut thread, the combined thickness of the metal sheets to be screwed together must be larger than the screw pitch. If the total thickness of the sheet metal is smaller, it is advisable to pierce or extrude the core holes. This allows the necessary tightening to be secured. Otherwise the use of selflocking nuts (also known as spring nuts or speed nuts) is recommended. Often, however, the pressed-hole screw joints are advantageous – especially in mass production. Using a special tool the pressed-hole is punched, slit, and formed spirally conforming to the thread pitch of the corresponding tapping screw. It can be either punched into the sheet metal to be screwed itself, or also into a special sheet metal – similar to a lock nuts. Pressed-hole screw joints are generally only recommended for low-carbon steel sheets. There are circumstances where heat-treated steels or non-ferrous metals will require a special construction of pressed-holes.


P.O.Box 261



Recommended core hole diameters for tapping screws in metals Experience with the core hole diameters as set out in the following table has shown that they are also suitable for most kinds of protective coating, e.g. galvanized plating as specified by DIN 267 / part 9 or ISO 4042. The core hole sizes are given as recommendations which have resulted from the practice by manufacturers and users. It may however be advisable, in certain cases – particularly in mass production – to confirm the core hole diameters by suitable tests. Core hole diameter1) Tapping screw thread acc. to DIN 7970 Nominal diameter

No. acc. to ISO

2 ,2

2

2 ,9

4

3 ,5

6

Thickness of sheet metal

more than

up to

0,56 0,75 0,88 1,13 1,38 0,56 0,63 0,75 0,88 1,25 1,38 1,75 0,56 0,75 1 1,25 1,38 1,75 25

0,56 0,75 0,88 1,13 1,38 1,5 0,56 0,63 0,75 0,88 1,25 1,38 1,75 2,5 0,56 0,75 0,88 1,25 1,38 1,75 2,5 3

pierced or extruded

steel, nickel, br a s s, c o p p e r a n d m onel sheet s 2 ,2 2,5 2,5 2,5 2 ,8 2,8 2,8 -

aluminium sh e e ts 2, 2 2, 2 2, 2 2,2 2, 8 2, 8 2,8 -

drilled or punched

steel, ni nickel b r a ss , co p p e r a n d m onel sheet s 1,6 1,7 1,8 1,8 5 1,8 5 1, 9 2, 2 2 ,2 5 2 ,2 5 2 ,4 2,4 2,4 2,5 2, 6 2, 6 2 ,7 2 ,7 2 ,8 2 ,8 2,9 3 32

aluminium sh e e ts 1,6 1,6 1 ,6 1 ,7 1,8 2 ,2 2,2 2 ,2 2,2 2,25 2,4 2,6 5 2 ,6 5 2 ,6 5 2,75 2 ,8 5 3


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Core hole diameter1) Tapping screw thread acc. to DIN 7970 Nominal diameter

No. acc. to ISO

4 ,8

10

5 ,5

12

6 ,3

14

Thickness of sheet metal

more than

up to

0 ,5 0 ,7 5 1 ,1 3 1 ,3 8 1 ,7 5 2 ,5 3 3 ,5 4 4 ,7 5 1 ,1 3 1 ,3 8 1 ,5 1 ,7 5 2 ,2 5 3 3 ,5 4 4 ,7 5 1 ,3 8 1 ,7 5 2 3 4 4 ,7 5 5 1 ,3 8 1 ,7 5 2

0 ,5 0 ,75 1, 13 1, 38 1, 75 2 ,5 3 3 ,5 4 4 ,7 5 10 1 ,13 1, 38 1, 5 1 ,75 2, 25 3 3 ,5 4 4 ,7 5 10 1 ,38 1, 75 2 3 4 4 ,7 5 5 10 1 ,38 1, 75 2 3

pierced or extruded

steel, nickel, br a s s, c o p p e r a n d m o n e l sh e e t s 4 4 4 4 4,7 4,7 5,3 -

aluminium s h e e ts 4 4 4 -

drilled or punched

steel, ni nickel b ra ss , co p p e r a n d m o n e l s h e e ts 3,7 3,7 3,9 3,9 4 4,1 4,3 4,4 4,4 4,2 4,3 4,3 4 ,5 4,6 4,7 5 5 5,1 4,9 5 5,2 5 ,3 5 ,8 5,9 6,4 6,5 6,7 68

aluminium sh e e t s 3,7 3,7 3 ,7 3,8 3,8 3,9 3,9 4 4 ,2 4,1 4,1 4,2 4 ,4 4,6 4 ,6 4 ,8 4,8 4 ,9 5 5 5 ,2 5 ,3 5,4 5 ,6 5 ,8 6 ,5 6,5 67


P.O.Box 261



Electroplated coatings Electro zinc plating and chromating is the most frequently required coating, since it has proven to be excellent with respect to corrosion resistance and appearance (this process is also called “galvanizing (European terminology only - however in North America, it should not be confused with hot dip galvanizing)” or ”promatizing”, corresponding to zinc-blue-chromated process group B). In vehicle constructions and piping, zinc-plated, yellow-dichromated fasteners are being used more and more because of of their higher resistance resistance to corrosion. We keep an extensive range range of zinc plated products on stock. Unplated parts that are in stock can normally be electroplated within 1 - 2 weeks.

Coating metal/alloy Designation symbol

Elements

Symbol

A B C D E F G H J K L N P Q R

Zinc Cadmium2) Copper Brass Nickel Nickel-chromium1) Copper-nickel Copper-nickel-chromium1) Tin Copper-tin (Bronze) Silver Copper-silver Zinc-nickel Zinc-cobalt Zinc-iron

1)Thickness of chromium approximately 0,3 mm 2)Use of cadmium is restricted or prohibited in certain countries

Chromate treatment and corrosion protection performance Chromate treatment

Typical color


Zn Cd Cu CuZn Ni NiCr CuNi CuNiCr Sn CuSn Ag CuAg ZnNi ZnCo ZnFe


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Coating thickness for parts with external threads General purpose tolerance for screw threads Tolerance deviation g Pitch

Nominal thread diameter1)

P

Fundamental deviation

2)

Ao

Tolerance deviation f

Coating thickness max. in the thread 3)

All nominal lengths

Tolerance for

Special purpose tolerance for screw threads Fundamental deviation

2)

Nominal length, l Ao

Tolerance deviation ax

Tolerance deviation e


All Nominal lengths

hot dip galvanizing


Nominal length, l Ao

2)

Coating thickness max. in the thread

All nominal lengths


3)

Nominal length, l


All nominal lengths

Ao

I < 5d

5d < l < 10d 10 d < l < 15d

I < 5d

mm

mm

mm

mm

mm

mm

mm

mm

– 18

3

3

3

3

1,4

– 18

3

3

3

3

1,6 (1,8)

– 19

3

3

3

3

– 34

8

8

5

5

– 19

3

3

3

3

– 34

8

8

5

5

I < 5d

5d < l < 10d 10 d < l < 15d

M

mm

0, 25

1; 1,2

0, 3 0, 35 0, 4

2

0, 45

2,5 (2,2)

– 20

5

5

3

3

– 35

8

8

5

5

0, 5

3

– 20

5

5

3

3

– 36

8

8

5

0, 6

3,5

– 21

5

5

3

3

– 36

8

8

0,7

4

– 22

5

5

3

3

– 38

8

8

0, 75

4,5

– 22

5

5

3

3

– 38

8

8

5

5

– 56

12

12

10

8

0, 8

5

– 24

5

5

3

3

– 38

8

8

5

5

– 60

15

15

12

10

1

mm

5d < l < 10d 10 d < l < 15d

mm

mm

mm

mm

mm

mm

5

– 50

12

12

10

5

5

– 53

12

12

10

8

5

5

– 56

12

12

10

8

mm

mm

8

6 (7)

– 26

5

5

3

3

– 40

10

10

8

5

– 60

15

15

12

10

– 29 0

70

1,25

8

– 20

5

5

5

3

– 42

10

10

8

5

– 63

15

15

12

10

– 2 95

70

1, 5

10

– 32

8

8

5

5

– 45

10

10

8

5

– 67

15

15

12

10

– 30 0

75

1,75

12

– 34

8

8

5

5

– 48

12

12

8

8

– 71

15

15

12

10

– 310

75

16 (14)

– 38

8

8

5

5

– 52

12

12

10

8

– 71

15

15

12

10

– 31 5

75

20 (18; 22)

– 42

10

10

8

5

– 58

12

12

10

8

– 80

20

20

15

12

– 315

80

24 (27)

– 48

12

12

8

8

– 63

15

15

12

10

– 85

20

20

15

12

– 335

80

2 2, 5 3 3,5

30 (33)

– 53

12

12

10

8

– 70

15

15

12

10

– 90

20

20

15

15

– 34 5

85

4

36 (39)

– 60

15

15

12

10

– 75

15

15

15

12

– 95

20

20

15

15

– 355

85

4,5

42 (45)

– 63

15

15

12

10

– 80

20

20

15

12

– 1 00

25

25

20

15

5

48 (52)

– 71

15

15

12

10

– 85

20

20

15

12

– 10 6

25

25

20

15

5,5

56 (60)

– 75

15

15

15

12

– 90

20

20

15

15

– 112

25

25

20

15

6 64 – 80 20 20 15 12 – 95 20 20 15 15 1)Information for coarse pitch threads is given for convenience only. The determining characteristic is the thread pitch. 2)Maximum values of nominal coating thickness if local thickness measurement is agreed. 3)Maximum values of nominal coating thickness if batch average thickness measurement is agreed.

– 118

25

25

20

15


T 75

All rights reserved


P.O.Box 261



Surface treatment processes Coatings and Platings Process

Description


P.O.Box 261



Surface treatment processes Coatings and Platings Process Hot-dip galvanizing

Phosphating

Black oxidizing Burnishing

Thermal post-treatment2) (baking)

Dacromet

Mechanical (zinc) plating

Description Products are immersed in molten zinc with a temperature of about 440-470° 440-4 70°C. Coating thicknes th icknesses ses 40-80my 40-80m y. Dull and rough roug h finish. Spotting may occur within a fairly short time. Very high protection against corrosion. Distant protection even if coating partially is lacking. Only slight protection against corrosion. Good undercoat for painting. Grey to grey-black appearance. Improved protection against corrosion by subsequent lubricating. Chemical process, pro cess, bath temperature temp erature approx. approx . 140°C. For decorative purposes, only slightly corrosion-resistant. Similar process as black oxidizing, however, various shades of colour may be obtained: light, medium, dark, or according to customer’s sample. All steel components with high tensile strength (over 1000N/mm2) may be subject to embrittlement (hydrogen (hydrogen embrittlement) due to absorption of hydrogen during pickling or electrolytic treatment. The beneficial effect of a Thermal post-treatment (below annealing temperature) after electroplating is the removal of hydrogen hydrogen by effusion effusion and / or the irreversible irreversible trapping of hydrogen in the steel. With the present state of technical knowledge this process offers good practical results for fasteners smaller than M14. With increasing coating thickness the difficulty of removing hydrogen increases. Thermal post-treatment follows immediately after the electrolytic treatment. Excellent, non-electrolytic coating process for high-tensile components. The possibility of hydrogen embrittlement is excluded, if the process is carried out correctly. Resistance to corrosion is roughly the same as for electroplating of the same thickness. Chemo-mechanical plating process. The degreased parts are placed in a cladding drum with a special mixture of glass pellets and zinc powder. The glass pellets serve as a carrier for the zinc


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Electroplated high-tensile steel, electroplated spring steel Risk of failure due to hydrogen embrittlement Steel fasteners - with a hardness of 320 HV HV and more (property (property class 10.9 and higher/spring higher/spring steel) or which have been surface hardened - which have been chemically and/or electrochemically electrochemically treated and and have therefore therefore absorbed hydrogen - which are are under tensile stress stress may be subject to the mechanism of hydrogen embrittlement. Appropriate precautions (choice of raw material, cleaning in inhibited acid only or by sandblasting, plating in high cathodic efficient solutions, baking after plating in accordance with ISO 4042) can help to reduce the risk of hydrogen embrittlement. Based on the technical know-how of our suppliers and our own experience, we supply fasteners of property classes 10.9 and higher, as well as fasteners made of spring steel in electroplated and baked condition. According to the present state of the art, the risk of hydrogen induced embrittlement is very low, however, it cannot be totally excluded. All parts can also be supplied dacrometized or mechanically plated. The risk of hydrogen embrittlement is completely eliminated by these processes. As the user of the fasteners, only you fully know the applications and the pertaining risks. And only you are in a position to establish a cost-effectiveness analysis for the chosen type of plating (lowprice electroplating and baking with a calculated risk or high-price special plating without risk) . Be sure to give us the relevant instructions when placing your order. We also stock certain items and sizes dacrometized or mechanically plated.


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Locking of fasteners When bolted joints are put under dynamic stress, they may become loose unless they are properly secured. A distinction is made between two types of fastener locking. a) Securing Securing against against loss of of clamping clamping load load (setting (setting)) With axially stressed, preloaded screws, setting occurs (i.e. smoothing (= local plastic deformation) of the surfaces in the parting planes, compensation of excessive surface pressure) and leads to a loss of clamping load. A drop in preload increases the dynamic portion of the load in the screw and can cause fatigue failure. b) Securing Securing against against rotation rotation (unscrew (unscrewing/lo ing/loosenin osening) g) If a relative movement between the tightened parts is able to occur as a result of high lateral force (or insufficient preload due to loss of clamping load, faulty assembly, or incorrect dimensioning), it releases the self-locking in the thread and the friction in the head or nut section and the fastener will loosen by itself. This can, in fact, result in a total loosening (falling apart) of the bolted joint.

Precaution against loss of clamping load

Effects

Setting partially compensated by tightening

Setting partially compensated during tightening

Increa Inc rease se cla clampi mping/ ng/dia diamet meter er rat ratio, io, len length gth = 4 x diame diameter ter

Greaterr elas Greate elastic ticity ity,, more more spa space ce for for com compen pensat sation ion of setting

Reduce Redu ce su surf rfac acee rou rough ghne ness, ss, cl clea eann sep separ arat atin ingg sea seams ms,, minimize the number of parting planes

Less Le ss po poss ssib ibililititie iess for for lo loss ss th thro roug ughh set settiting ng (e (emb mbed eddi ding ng))

Use flange products

Larger bearing surface prevents exceeding the max imum permissible surface pressure

Use spring elements with sufficient rigidity

Compensation of setting (too soft spring elements have no effect, rather they merely increase the number of separating seams and setting possibilities!)

Re-tighten after initial operating time

Compensates setting

Precaution against unscrewing

Effects


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(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Locking elements

Limitations of: Elements against loss of clamping load

Used with fasteners of property class 4.8

5.8

6.8

Used with fasteners of property class

Elements against rotating

8.8

6.8

<

10.9 12.9

DIN 982 DIN 985 DIN 986

2–3

3–4 –

–

–

Prevailing torque nuts all metallic DIN 980 V/ M

2–3

3–4 –

–

2–3

–

Castle nuts

–

–

–

e. g. DIN 935 p. ex. DIN 935

2–3

–

–

–

2

–

–

–

DIN 93

2–3

–

–

–

Conical spring washers SN 212745

2

2

2–3

–

Wire as locking means

3

–

–

–

Curved spring lock washers

DIN 128 A

2

2

2–3

–

Microencapsulated screws «Precote®»

1

1

1

1

Waved spring lock washers

DIN 128 B d) 2–3

3

–

–

Anaerobic adhesives «OmniFIT»

1

1

1

1

Polyamid patch coated screws and nuts «Kaflok®»

2

3

–

–

Helicall spr Helica spring ing loc lockk washers

DIN 127 A a) DIN 127 B a) a) 2

2–3

–

–

High collar spring lock washers

DIN 7980 b) 2

2–3

2–3

2

2

Curved spring washers DIN 137 A c) 3 Waved spring washers

Double coil spring lock washers (Thackeray washers) DIN 137 B

Conical spring washers DIN 6796

2

2

2

3

Disc springs

3

3

2–3

2–3

DIN 2093

Elements against loss of clamping load and against rotating

Used with fasteners of property class <

Serrated lock washers

DIN 6798 A/J/V/DD

6.8

2–3

Prevailing torque nuts with polyamid insert

8.8

Tab washers

Elements against loosening

8.8 10.9 12.9 –

–

–

Used with fasteners of property class <

Prevailing to torque nu nuts with polyamid insert

DIN 98 982 DIN 985

6.8 8.8

10.9 12.9


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(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Static and dynamic tests of various locking elements chart key: regular hex bolts DIN 931 931-8.8 -8.8 / hex nuts DIN 934-8 with locking element Frequency: Amplitude in idle motion 100% Fv:

omniFIT® PRECOTE®

DURLOK® Serrated screws and serrated nuts

M 10

×

35

12,5 Hz ± 1,0 mm 25 kN

Anaerobic adhesives have excellent locking features after final curing. In the test the loss of preload was less than 15% even after 75000 cycles.

Serrated or ribbed screws and nuts are very good locking elements. They can be re-used and do not have a limit regarding reasonable temperatures. At sufficient hardness of the connected parts, the loss on preload was less than 20% after 50000 cycles.


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Securing against loosening Kaflok® Nylon-polyamid patch for securing and sealing Kaflok® is a highly elastic nylon® coating with is sprayed onto a part of the thread and firmly adheres to it. When the thread is engaged, the nylon patch (or ring) generates high pressure against the thread flanks of the mating part. The result is a secured joint which can be loosened at any time again. Fasteners with a nylon patch do not only secure in a preset position or under preload, but in any position. Therefore Kaflok® is often used with adjusting screws. Advantages: q Good locking element against loosening (falling apart) q No cure time required, load can be applied immediately q Can be re-used several times q Secures at any position q The locking feature is an integrated part of the fastener q Cost savings in assembly; coated parts can easily be assembled automatically q No limit to storage time for coated parts q Kaflok®-ring coated parts have good sealing properties against liquids and gases q Corresponds to DIN 267 / part 28 Temperature range: Dimensions - diameter: length: Chemical resistance against: Colors: Coefficient of friction in the thread for patch coating (=standard) for ring coating

– 50 °C to + 90 °C (heat resistance resistance briefly: max. +120 °C) M 3 to M 68 5 mm to 200 mm alcohol, gasoline, oil, most diluting agents blue (or other colors at our option) 0,10–0,14 = 0,12–0,15

mthr = mthr


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Securing against loosening Microencapsulation Microencapsulat ion is a bonding pre-coating for threaded parts (M3 and larger). The coating Microencapsulation contains two separated microencapsulated components of a modified acrylate system. Varnish functions as carrier for the micro capsules. When the coated thread is tightened, the micro capsules in the layer are broken and the components are mixed together. The mixture hardens rapidly and fully secures the joint against unscrewing, even at the greatest dynamic lateral forces or vibration. Microencapsulat ion is today regarded as one the most effective methods of securing screws Microencapsulation in large series. Advantages: q The locking feature is an integrated part of the fasteners. q Major cost savings in assembly; coated parts can easily be assembled automatically. q Effective sealing of thread (possibility of through-boring instead of blind hole). q Outstanding results with both low and high tension screw connections. q Good resistance to chemical influences. q No damage to surface. q Coated parts can be stored for up to three years before assembly. q Corresponds to DIN 267 / part 27

Product

Color code

Torques MLB /MA

Coefficient of friction in the thread m thr

Functional strength after h

Temperature range for application

Precote® 30* 30*

yellow

< 1,1

0,14–0,16

3h

– 60 °C to +120 °C

Precote® 80* 80*

red

> 1,1

0,26–0,28

3h

– 60 °C to +180 °C

Precote® 85*

b l ue

> 1,1

0,16–0,18

6h

– 50 °C to +150 °C

Precote® 100* 100*

green

> 1,3

0,12–0,15

6h

– 50 °C to +120 °C


P.O.Box 261


(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA We offer this only as a process applied to our fastener products, not as a separate item.

omniFIT ® -anaerobic adhesives omniFIT Diacrylate adhesives are solvent-free, single component anaerobic reactive adhesives. They polymerize when deprived of atmospheric oxygen and under the catalytic effect of metals to a high molecular, networked plastic with strength properties at differing levels.

LOCKING of Threads

RETAINING of mating Parts

SEALING of Surfaces

Threaded connections of all kinds subjected to transverse and axial loads can be locked against vibration and shock. The locking medium adheres to the surfaces firmly and simultaneously seals the thread gap. It maintains on-torque, prevents loosening and protects against corrosion. As the surface contact is complete, loading is distributed over the whole engaged length, thus preventing material fatique.

omniFIT can be relied upon to retain mating parts, e.g. pulleys or couplings on shafts, antifriction bearings or bushes in housings. A change can be made from fixed seating to slip seating with an extended tolerance range. Wedges, adjusting springs, pins and the like can be eliminated. It is suitable for strengthening of press and shrink fittings. It increases static friction by up to 3 times. It prevents fretting

For sealing pipe joints and flanges. omniFIT has good resistance to chemicals and is thus suitable as a special sealant. In additional to reliable sealing it is vibration and shock resistant. Hence it is possible, for example, to have any desired angle for connecting pieces. Its high pressure resistance coupled with non-setting and nonflowing properties offer special advantages for sealing flanges


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(410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA We offer this only as a process applied to our fastener products, not as a separate item.

omniFIT ® -anaerob -anaerobic ic adhesives: varieties omniFIT 15

yellow

(very low strength)

This low strength compound is particularly suitable for adjusting screws which are subject to vibration and connections with very coarse threads which must continue to be dismantled easily. Used with very small screws in eyeglass frames and cable clamps.

omniFIT 50

blue

(low strength)

Can be used to lock screws in positions of difficult access which must be removable without much expenditure of strength. For sealing large pipe threads up to 2“. For sealing around sensors, locking and sealing of parts subjects to wear. Use in screwed joints for oil, water and gas.

omniFIT 100

r ed

(medium strength)

Rapid hardening, hence preferred for production line bonding with short sequence times. Examples of use: Retaining of sliding bushes, sealing at plugs at cut off points in hydraulic, pneumatic systems. Universal screws locking compounds. For threads up to M 24 and thread engagement till 2 times the diameter.

omniFIT 100 special Reduced coefficient of friction. Is specially suitable as locking device for high-tensile bolted connections.

omniFIT 200

green

(high strength)

Product line with the shortest curing times. Loosening is possible only if heated. Examples of use: Retaining of shafts and bushes. Reinforcement or replacement of longitudinal and transverse press fits. Screwed joints in frame construction. Preferred screw locking compound in the automotive industry.

M ARY YL A N D M MET TR RI C CS P.O.Box 261 Owings Mills, MD 21117 USA (410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA Product Summary omniFIT®

We offer this only as a process applied to our fastener products, not as a separate item. P r o d uc t

Colour co d e

S t r e ngt h cat ego ry

Curing pr o per t i e s

Vi scos it y [ m Pa . s ]

Gap sui ted ( m a xi m um ) [mm]

S h e ar [ N / m m2 ] ( M Pa )

To r q u e s MLB / M A

MLB [ MN ]

À

Á

15 M

yellow

v er y l o w st r e ng t h

r ap id h ar den i ng

700

0 –0 , 15 ( 0 , 25 )

4, 5

0, 9 – 1 , 0

Â

Ã

5

M LW max

Fu n c t i o n a l st r engt h [ h]

F i nal c ur i ng t ime aft er [ h]

Temper atur e r a ng e f o r appli cation

Ä

Å

< M LB

<3

8

– 60 ° C t o + 8 0 °C

6

50 M

b l ue

l o w st r en gt h


700

0 –0 , 15 ( 0 , 25 )

11, 0

1, 0– 1 , 1

12

< M LB

<3

100 M

red

medi um str ength


700

0 –0 , 15 ( 0 , 25 )

20, 0

1, 1– 1 , 3

17

< M LB

<3

6

150 M

g r ee n

hi gh st reng th

nor mal har denin g

1100

0 –0 , 02 ( 0, 3 )

31, 0

> 1, 3

28

> M LB

<6

24

30

ø pr e ss fi t s 0 –0 , 05 ( 0, 1 )

30, 0

10

> M LB

<3

6

700

0 –0 , 15 ( 0 , 25 )

34, 0

28

> M LB

<3

6

150

ø pr e ss fi t s 0 –0 , 05 ( 0, 1 )

36, 0

43

⊥

M LB

<3

8

0 –0 , 15 ( 0 , 25 )

40, 0

47

⊥

M LB

<3

8

400

0 –0 , 1 ( 0 , 2 )

28, 0

32

⊥

M LB

<3

8

700

0 –0 , 15 ( 0 , 25 )

30, 0

35

⊥

M LB

<3

8

7, 0

> 1, 1

8

< M LB

<6

24

0,05–0, 25 (0, 4)

20, 0

> 1, 3

20

< MLB

<1

6

12, 0

> 1, 1

10

< M LB

<2

6

20, 0

1,1 –1 , 3

20

⊥

M LB

<3

8

20, 0

1,1 –1 , 3

22

⊥

M LB

< 12

72

30, 0

> 1, 3

35

⊥

M LB

<1

6

200 LL

g r ee n

hi gh st reng th


200 M 230 L

violet 230 M 220 M

violet

222 M

high strength and temperature resistant very high strength and temperature resistant

r api d h ar den i ng 700 rapid hardening

FD 10

g r ee n

l o w st r en gt h

nor mal har denin g

t hi xo t r op i c

FD 20

v i o l et

hi gh st reng th


t hi xo t r op i c

FD 30

o r an ge

l o w st r en gt h


t hi xo t r op i c

seal 50 H

b l ue

medi um str ength


t hi xo t r op i c

seal 54 H

w hi t e

medi um str ength

sl ow h ar de n i n g

t hi xo t r op i c

seal 58 H

b l ue

hi gh st reng th

very rapid hardening

t hi xo t r op i c

0,05–0, 25 (0, 4)

– 6 0 °C to + 1 50 °C

> 1,3

> 1, 3

> 1,3

– 6 0 ° C t o + 2 0 0 °C

– 6 0 °C to + 2 20 °C

– 6 0 ° C t o + 1 8 0 °C

– 60 °C to + 150 °C – 60 °C t o + 180 °C

copyright 1999 maryland metrics all rights reserved

M A R YL A N N D M E T R IC S S P.O.Box 261 Owings Mills, MD 21117 USA (410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA

Explanations to the product summary on page T 86

T 86

M A R YL A N N D M E T R IC S S P.O.Box 261 Owings Mills, MD 21117 USA (410)358-3130 (800)638-1830 Faxes: (410)358-3142 (800)872-9329 http://mdmetric.com [email protected] TECHNICAL INFORMATION and DATA

Explanations to the product summary on page T 86

À Viscosity measured with Rotary

Viscometer at 20° C in accordance with DIN 54 453.

Ã MLB is defined as the reading obtained at the

first relative movement between nut and bolt thread per DIN 54 454 measured without preload.


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CERTIFICATES EN 10204 (formerly DIN 50 049) a) General Certificates may be required as proof of quality, as a guarantee or for certifying the origin of the goods. Issuing a certificate can be quite time- and money-consuming, since it may require extensive technical and administrative efforts. The costs of a certificate are openly stated as a separate item on your invoice. It is always much more complicated and more expensive, sometimes even impossible in the desired form, to issue a certificate at a later time . We therefore recommend to clearly indicate requirements for certificates with your request/order. Besides the costs, a certificate may also have an influence on the delivery time. Items in stock do not necessarily have the requested certificates, so that special production or waiting for the next lot may be necessary. Content and extent of the certificates is generally determined by the customer. In particular, for the frequently requested certificates for material tests in accordance with EN 10 204 it only is determined: - who has to test the product (i.e. plant inspector), - which products have to be tested (i.e. samples of the delivery lot). It is not stated: - what has to be tested, - how many test runs are to be made. Lacking given requirements, we assume that the mechanical properties (obtained by the tensile test) and the chemical analysis of one sample product are required. We recommend that the customer give us pertinent information, such as for example on required tests according to the specifications of certain associations (i.e. AD worksheets, SVTI rules, TRD standards) or according to property standards (i.e. DIN, ISO), to clearly specify the contents of the certificate. b)

Documents for material tests in accordance with EN 10 204 (DIN 50 049)

b2) Documents issued by the manufacturing plant* 21

Certificate of compliance /Werkbesc /Werkbescheinigung/Attesta heinigung/Attestation tion de conformité

Maryland Metrics FASTENER CATALOG INDEX Maryland Metrics Fastener catalog pages are in .PDF format. If you do not have the Proper Proper (minimum version version 4.0) Acrobat Acrobat Reader Reader software, software, then then click here. Return to Fastener Catalog Master Index Page.

Chapter O Chapter Index Package quantities How to use this catalog General terms of sale

(for chapters chapters A thru J)

Special Special note for chapters chapters A thru J: The pricing in the 1000+ column is the price per 100 pieces. Due to recent currency fluctuations, all published pricing is subject to correction.

DIN indexes (for chapters chapters A thru J) ISO indexes (for chapters chapters A thru J) SN/VSM/K# indexes (for chapters chapters A thru J) Alphabetical Alphabet ical indexes (for chapters chapters A thru J) Standardization ISO 9002 certificate from our primary Supplier Note: Many of the links above select a group of pages. Use your vertical scroll bar to see all the pages. You may use our

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Portions of this page are still under construction. Return to Fastener Catalog Master Index Page. Prices and discounts published here are ONLY valid for *Internet Purchases. *See 'How to order order'' instructions for internet fastener catalog purchases. Please inquire about pricing for customer service department assisted purchases. Phones: Phones: (800) 638-1830 or (410) 358-3130 are available available Monday-Friday 8:30 AM to 5:30 PM Eastern time. Faxes: Faxes: (800) 872-9329 or (410) 358-3142 & E-mail are available available anytime. Warehouse Warehouse & showroom showroom hours are Monday-Friday 10 AM to 5:30 PM. [ To: Maryland Metrics home page ] [ To: Maryland Metrics Product Guide ] [ e-mail to Maryland Metrics ] Please note that all Trademarks and Tradenames are the property of their respective owners. copyright copyright 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2011 maryland metrics -- all rights reserved -- ver gg23f chaptero.htm chaptero.htm

Maryland Metrics -- Fastener Technical Data

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