As per indian standard, calculation use to calculate tightening torque for all classed bolt,
Bolt Torque Value Calculations
o describe the differential of bolt torque and bolt tap test on derrick structure
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metric pattern cutting for children´s wear and baby wearFull description
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Bolt Torque ASME B16 5 Flanges Sheet Gaskets 02
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Metric ThreadsFull description
Metric Bolt Torque Table Estimated with clamp load as 75% of proof load as specified in ISO 898-1 8.8
10.9
12.9 Socket Head Cap Screw
M6 - M16: 800 M20 - M30: 830
1040
1220
Property Class Minimum Tensile Strength MPa Nominal Size and Thread Pitch
Bolt Torque Specs in Foot Pounds or (Inch Pounds) Dry
Lubed
Dry
Lubed
Dry
Lubed
M5 x 0.80
(54)
(41)
(78)
(59)
(91)
(68)
M6 x 1.00
(92)
(69)
(133)
(99)
(156)
(116)
M7 x 1.00
(156)
(116)
(222)
(167)
(260)
(195)
M8 x 1.25
(225)
(169)
(333)
(242)
(377)
(284)
M10 x 1.50
37
28
53
40
62
47
M12 x 1.75
65
49
93
69
108
81
M14 x 2.00
104
78
148
111
173
130
M16 x 2.00
161
121
230
172
269
202
M18 x 2.50
222
167
318
238
372
279
M20 x 2.50
314
235
449
337
525
394
M22 x 2.50
428
321
613
460
716
537
M24 x 3.00
543
407
776
582
908
681
M27 x 3.00
796
597
1139
854
1331
998
M30 x 3.50
1079
809
1543
1158
1804
1353
M33 x 3.50
1468
1101
2101
1576
2455
1842
M36 x 4.00
1886
1415
2699
2024
3154
2366
Lubed means cleaned dry bolts lubricated with a standard medium viscosity machine oil. Lubricate all contact areas of the bolts and washers. Lubricating the bolts is the suggested method. Thread Engagement
Inch Bolt Torque Table Estimated with clamp load as 75% of proof load as specified in SAE J429 and ASME 574 Steel Grade
SAE 5
SAE 8
Socket Head
Cap Screws Minimum Tensile Strength PSI
120,000
150,000
1/4-1/2" 180,000 5/8-1" 170,000
Nominal Dia. and Thread Pitch
Bolt Torque Specs in Newton Meters - Nm Dry
Lubed
Dry
Lubed
Dry
Lubed
1/4-20
11.4
8.6
16.2
12
19
13.6
1/4-28
13.1
9.8
16.6
13.9
21.7
16.3
5/16-18
23.6
17.7
33.3
25
39.3
29.8
5/16-24
26.1
19.7
36.9
27.7
43.4
32.5
3/8-16
42
31.2
60
45
69
52
3/8-24
47
35
66
50
79
58
7/16-14
66
50
95
71
110
83
7/16-20
75
56
106
79
123
92
1/2-13
102
77
144
108
168
126
1/2-20
115
87
163
122
190
142
5/8-11
203
153
287
216
323
243
5/8-18
230
172
325
244
366
274
3/4-10
362
271
510
382
574
430
3/4-16
403
302
569
427
640
480
7/8-9
582
437
822
617
925
693
7/8-14
643
481
907
681
1020
765
1-8
873
655
1232
923
1879
1040
1-12
979
735
1383
1037
1555
1166
Lubed means cleaned dry bolts lubricated with a standard medium viscosity machine oil. Lubricate all contact areas of the bolts and washers. Lubricating the bolts is the suggested method. Thread Engagement
Torque Units Conversion Table This table contains values to multiply-by to convert common units of torque. For ease-of-use, try the Torque Units Conversion Calculator. Torque Conversion Table
From
To
Multiply by
From
To
Multiply by
ft lb
Nm
1.355818
Nm
ft lb
0.737562
ft lb
mkg
0.138255
Nm
in lb
8.850745
ft lb
in lb
12
Nm
mkg
0.101972
in lb
Nm
0.112985
Nm
cmkg
10.19716
in lb
dNm
1.129848
dNm
in lb
0.885075
in lb
cmkg
1.152125
cNm
in oz
1.416119
in lb
ft lb
0.083333
mkg
ft lb
7.233014
in lb
in oz
16
mkg
Nm
9.80665
in oz
cNm
0.706155
cmkg
in lb
0.867962
in oz
in lb
0.0625
cmkg
Nm
0.098067
ft lb = Foot Pound [lb ft, lbf ft] in lb = Inch Pound [lb in, lbf in] in oz = Inch Ounce [oz in, ozf in] Nm = Newton Meter [N m] cNm = Centi Newton Meter [Ncm, N cm] dNm = Deci Newton Meter mkg = Kilogram Meter [kg m, kgf m, kgm] cmkg = Kilogram Centimeter [kg cm, kgf cm] Thread Engagement Inch Bolt Torque Table Metric Bolt Torque Table Torque Wrench Adapter Calculator Inch & Metric Tap Drill Sizes & Decimal Equivalent Table Note: Great care has been made to make sure this information is accurate. However, due to human error, the user agrees to accept full responsibility to verify that the provided information meets their requirements before using it.
Torque Wrench Tips A torque wrench is a precision instrument, therefore it's important to use it properly and handle it carefully.
1. Avoid dropping a torque wrench. Dropping a torque wrench on a hard surface can throw off it's calibration. If the calibration is off, the set torque value or reading viewed on the wrench will not reflect the true value.
2. Only use a torque wrench in the final assembly process. Do not use it as the primary means of removing or installing fasteners as that could damage it and cause it to need recalibrating sooner. 3. Apply torque in a slow methodical manner. Fast or jerky movements can cause the applied torque to be higher or lower than desired and possibly damage the torque wrench. 4. Always set a click-type torque wrench to the manufacturers torque setting when storing it. If the setting is not specified, set it to the lowest value on the scale. 5. Most torque wrenches are length specific so always grasp the wrench in the center of the handle. If two hands are needed, place one hand on top of the other. 6. A torque wrench should be recalibrated when a certain amount of time or number of cycles have been reached as specified by the manufacturer. 7. Never use cheater bars or handle extensions unless they are allowed by the torque wrench manufacturer. 8. Store torque wrenches in a clean and dry protected area.
