SURFACE VEHICLE STANDARD
REV. OCT2002
J1290
Issued Revised
1 98 0 - 07 2 00 2 - 10
Superseding J1290 MAY1989
(R) Automotive Hydraulic Brake System—Metric Tube Connections
1.
Scope— This SAE Standard documents dimensional metric specifications for hydraulic brake system tubing with flared ends, threaded ports, and male tube nuts for the interconnection of major components in automotive hydraulic brake systems.
The purpose of this document is to recommend preferred metrically dimensioned components (including alternative choices), that are intended to be functionally compatible with International Organization for Standardization Specification, ISO 4038. Some applications may require sizes of forms other than those shown herein, and this document does not preclude such other details when they are required. 2.
Re fe re nc e s
2.1
Appl Applic icab able le Publ Public icat atio ions ns— —The following publications form a part of the specification to the extent specified herein. Unless otherwise indicated the latest revision of SAE publications shall apply.
2.1.1
SAE PUBLICATIONS —Available from SAE, 400 40 0 Commonwealth Commonwea lth Drive, Drive , Warrendale, Warren dale, PA 15096-0001. 15096-0 001. SAE J512—Automotive Tube Fittings SAE J527—Brazed Double Wall Low Carbon Steel Tubing SAE J533—Flares for Tubing SAE J1047—Tubing—Motor Vehicle Brake System Hydraulic SAE J1291—Automotive Hydraulic Brake System—Metric Banjo Bolt Connections
2.1.2
ANSI PUBLICATION —Available from f rom ANSI, 25 West We st 43rd Street, St reet, New York, Yor k, NY 10036-8002. 10036 -8002. ISO4038—Road vehicles—Hydraulic braking systems—Pipes, tapped holes, males fittings and hose end fittings
2.1.3
DIN PUBLICATION —Available from f rom Global Engineeri En gineering, ng, 15 Inverness In verness Way Wa y East, Englewood, Engl ewood, CO 80112. 801 12. EN 10278 (DIN)—Dimensions (DIN)—Dimensions & Tolerances of Bright Steel Products
SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. suggestions. Copyright ©2002 Society of Automotive Engineers, Inc. All rights reserved. No part of thi s publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO P LAC E A DOC UME NT ORD ER :
Tel: Tel: Fax:
877-606-7323 (inside USA and Canada) 724-776-4970 (outside USA) 724-776-0790
SAE J1290 Revised OCT2002 3.
Tubing And Flares—Tubing and tubing end flares should be dimensioned as shown in Figure 1 and Table 1.
FIGURE 1—END FLARE (mm)
TABLE 1—DIMENSIONS AND TOLERANCES— FOR TUBING AND END FLARE (mm) D1 Bare Tube ±0.07
D1 Coated Tube ma x
D2 ±0.18
D3 +0.3 –0.2
D4
D5 min
A1 ±0.3
B1 ±0.07
E1 min
4.75
4.87
7.1
3.2
6.0
5.5
2.5
0.70
16
6.00
6.12
8.4
4.5
7.3
6.8
2.5
0.70
18
8.00
8.12
10.7
6.5
9.3
8.8
2.7
0.70
24
10.00
10.12
12.7
8.5
11.3
10.8
3.0
0.70
28
φ
N1 Datum line N2 Squareness and runout applies about diameter D1 over length E1 For information relative to brazed double-wall low-carbon steel tubing, refer to SAE J527 and SAE J1047. For additional information on flares, refer to SAE J533 and ISO 4038.
SAE J1290 Revised OCT2002 4.
Threaded Ports (Tube Nuts)— Threaded ports for disc brake calipers, drum brake wheel cylinders, combination valves, pressure switches, metering valves, proportioning valves, master cylinders, brake hose end fittings, tubing fittings, and other brake circuit components should be dimensioned as shown in Figure 2 and Table 2.
FIGURE 2—THREADED PORTS FOR TUBE NUTS ( mm)
SAE J1290 Revised OCT2002
TABLE 2—DIMENSIONS AND TOLERANCES FOR THREADED PORTS FOR TUBE NUTS (mm)
D2 Straight Thread Pitch
D2 Straight Thread Pitch 6H max
D2 Straight Thread Pitch 6H min (1)
D2 Straight Thread Minor 6H max
D2 Straight Thread Minor 6H min
1
9.500
9.350
9.153
8.917
D1 No m Tube OD
D2 Straight Thread Nom Size
4.75
M10
4.75
M12
1
11.510
11.350
11.153
10.917
2
3.3
12.5
7.0
10.0
0.35
0.50
4.75
M12
1.5
11.216
11.026
10.676
10.376
2
3.3
12.5
6.0
10.0
0.47
0.63
4.75
M14
1.5
13.216
13.026
12.676
12.376
2
3.3
14.5
6.0
10.0
0.47
0.63
4.75
M11
1
10.500
10.350
10.153
9.917
3
3.3
11.5
7.0
10.0
0.35
0.50
4.75
M11
1.5
10.206
10.026
9.676
9.376
3
3.3
11.5
6.0
10.0
0.47
0.63
4.75
M13
1
12.510
12.350
12.153
11.917
3
3.3
13.5
7.0
10.0
0.35
0.50
4.75
M13
1.5
12.216
12.026
11.676
11.376
3
3.3
13.5
6.0
10.0
0.47
0.63
4.75
M15
1.5
14.216
14.026
13.676
13.376
3
3.3
15.5
6.0
10.0
0.47
0.63
6.00
M12
1
11.510
11.350
11.153
10.917
1
4.6
12.5
9.0
12.0
0.35
0.50
6.00
M12
1.5
11.216
11.026
10.676
10.376
2
4.6
12.5
8.0
12.0
0.47
0.63
6.00
M14
1.5
13.216
13.026
12.676
12.376
2
4.6
14.5
8.0
12.0
0.47
0.63
6.00
M16
1.5
15.216
15.026
14.676
14.376
2
4.6
16.5
8.0
12.0
0.47
0.63
6.00
M13
1
12.510
12.350
12.153
11.917
3
4.6
13.5
9.0
12.0
0.35
0.50
6.00
M13
1.5
12.216
12.026
11.676
11.376
3
4.6
13.5
8.0
12.0
0.47
0.63
6.00
M15
1.5
14.216
14.026
13.676
13.376
3
4.6
15.5
8.0
12.0
0.47
0.63
8.00
M14
1.5
13.216
13.026
12.676
12.376
1
6.6
14.5
12.5
16.5
0.47
0.63
8.00
M16
1.5
15.216
15.026
14.676
14.376
2
6.6
16.5
12.5
16.5
0.47
0.63
8.00
M15
1.5
14.216
14.026
13.676
13.376
3
6.6
15.5
12.5
16.5
0.47
0.63
8.00
M17
1.5
16.216
16.026
15.676
15.376
3
6.6
17.5
12.5
16.5
0.47
0.63
10.00
M16
1.5
15.216
15.026
14.676
14.376
1
8.6
16.5
13.5
17.5
0.47
0.63
10.00
M18
1.5
17.216
17.026
16.676
16.376
2
8.6
18.5
13.5
17.5
0.47
0.63
10.00
M17
1.5
16.216
16.026
15.676
15.376
3
8.6
17.5
13.5
17.5
0.47
0.63
1. 2.
Selection Preference(2)
D7 +0.0 –0.4
1
3.3
D9
L1 Full Thread min
L2 +0.0 –0. 5
L7 min
L7 max
10.5
7.0
10.0
0.35
0.50
These values are also the basic pitch diameter. Ports recognized as standard for respective tube diameters are listed as preference 1. To avoid proliferation where ports having other thread diameter pitch combination must be used to satisfy design or installation requirements, it is recommended they be selected from sizes listed under preferences 2 and 3, respectively. For information relative to tube nut ports, refer to SAE Standard J512 and International Standard, Road Vehicles - Hydraulic Braking Systems - Pipes, Tapped Holes and Male Fittings - ISO 4038.
SAE J1290 Revised OCT2002 5.
Male Tube Nuts (Fittings)— M ale tube nuts should be dimensioned as shown in Figure 3 and Table 3.
NOTE—This standard supersedes SAE J1258 (Cancelled 1980). Threaded ports for banjo bolts, and banjo bolts are covered by SAE Recommended Practice J1291.
FIGURE 3—MALE TUBE NUT (mm)
SAE J1290 Revised OCT2002
TABL E 3—DIMENSIONS AND TOLERANCES FOR MALE TUBE NUTS (mm) D 10 D1
D10
D 10 Straight Thread Pitch(1) 6g max
D 10 Straight Thread Pitch(1) 6g min
Selection Preference (2)
No m Tube OD
Straight Thread No m Size
4.75
M10
1
9.324
9.212
4.75
M12
1
11.324
11.206
4.75
M12
1.5
10.994
4.75
M14
1.5
4.75
M11
1
4.75
M11
1.5
4.75
M13
4.75 4.75
L9 D11
D12
D13
+0.0 –0.2
+0.13 –0.0
+0.5 –0.0
1
8.4
4.95
2
10.4
4.95
10.854
2
9.7
4.95
12.994
12.854
2
11.7
4.95
7.3
16.78
15.00
3.7
11.55
14.05
18.30
10.324
10.212
3
9.4
4.95
7.3
13.32
12.00
2.3
10.40
12.90
17.15
9.994
9.862
3
8.7
4.95
7.3
13.32
12.00
2.8
10.60
13.10
17.35
1
12.324
12.206
3
11.4
4.95
7.3
15.63
14.00
2.9
11.00
13.50
17.75
M13
1.5
11.994
11.854
3
10.7
4.95
7.3
15.63
14.00
3.4
11.20
13.70
17.95
M15
1.5
13.994
13.854
3
12.7
4.95
7.3
17.94
16.00
4.0
11.85
14.35
18.60
6.00
M12
1
11.324
11.206
1
10.4
6.20
8.6
14.47
13.00
2.3
12.35
14.85
20.10
6.00
M12
1.5
10.994
10.854
2
9.7
6.20
8.6
14.47
13.00
3.1
12.60
15.10
20.35
6.00
M14
1.5
12.994
12.854
2
11.7
6.20
8.6
16.78
15.00
3.3
13.15
15.65
20.90
6.00
M16
1.5
14.994
14.854
2
13.7
6.20
8.6
19.09
17.00
3.9
13.75
16.25
21.50
6.00
M13
1
12.324
12.206
2
11.4
6.20
8.6
15.63
14.00
2.5
12.65
15.15
20.40
6.00
M13
1.5
11.994
11.854
3
10.7
6.20
8.6
15.63
14.00
3.0
12.90
15.40
20.65
6.00
M15
1.5
13.994
13.854
3
12.7
6.20
8.6
17.94
16.00
3.6
13.50
16.00
21.25
8.00
M14
1.5
12.994
12.854
1
11.7
8.20
10.9
16.78
15.00
3.3
17.45
19.95
25.20
8.00
M16
1.5
14.994
14.854
2
13.7
8.20
10.9
19.09
17.00
3.3
18.05
20.55
25.80
8.00
M15
1.5
13.994
13.854
3
12.7
8.20
10.9
17.94
16.00
3.3
17.75
20.25
25.50
Straight Thread Pitch
L 10
L 11
+0.5 –0.0
Full Thread min
+0.25 –0. 00
+0.50 –0.00
11.00
2.3
10.10
12.60
16.85
13.00
2.6
10.70
13.20
17.45
13.00
3.1
10.95
13.45
17.70
E min
S(3) +0.00 –0.1 3
7.3
12.16
7.3
14.47
7.3
14.47
L8
8.00
M17
1.5
15.994
15.854
3
14.7
8.20
10.9
20.25
18.00
3.5
18.30
20.80
26.05
10.00
M16
1.5
14.994
14.854
1
13.7
10.20
12.9
19.09
17.00
3.3
18.40
20.90
26.15
10.00
M18
1.5
16.994
16.854
2
15.7
10.20
12.9
21.41
19.00
3.3
19.00
21.50
26.75
10.00
M17
1.5
15.994
15.854
3
14.7
10.20
12.9
20.25
18.00
3.3
18.75
21.25
26.50
1.
Pitch diameter specified shall apply to plain (unplated or uncoated) nuts before plating or coating. The basic pitch diameter (minimum pitch diameter of internal thread shown in Table 2), shall apply to plated or coated nuts after plating or coating. 2. Nuts recognized as standard for respective tube diameters are listed as preference 1. To avoid proliferation where nuts having other thread diameter pitch combinations must be used to satisfy design or installation requirements, it is recommended they be selected from sizes listed under preferences 2 and 3, respectively. 3. For hexagon sizes refer to EN 10278 (DIN). For information relative to tube nut ports, refer to SAE Standard J512 and International Standard, Road Vehicles - Hydraulic Braking Systems - Pipes, Tapped Holes and Male Fittings - ISO 4038.
6.
Notes
6.1
Marginal Indicia—The change bar (I) located in the left margin is for the convenience of the user in locating areas where techncial revisions have been made to the previous issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report.
PREPARED BY THE SAE AUTOMOTIVE BRAKE AND STEERING HOSE STANDARDS COMMITTEE
SAE J1290 Revised OCT2002 Rationale—SAE J1290 documents dimensional metric specifications for hydraulic brake system tubing with flared ends, threaded ports, and male tube nuts for interconnection of major components in automotive hydraulic brake systems. The purpose of this document is to recommend preferred metrically dimensioned components that are intended to be functionally compatible with International Organization for Standardization Specification, ISO 4038. The members of the Automotive Brake and Steering Hose Standards Committee believe that this document should be updated. All revision levels and dates have been removed from any currently referenced specifications. This allows the latest revision of the referenced documents to be used. No technical changes have been made. This document has also been changed to comply with the SAE Technical Standards Board format. Relationship of SAE Standard to ISO Standard—Not applicable. Application— This SAE Standard documents dimensional metric specifications for hydraulic brake system tubing with flared ends, threaded ports, and male tube nuts for the interconnection of major components in automotive hydraulic brake systems. The purpose of this document is to recommend preferred metrically dimensioned components (including alternative choices), that are intended to be functionally compatible with International Organization for Standardization Specification, ISO 4038-1977 (E). Some applications may require sizes of forms other than those shown herein, and this document does not preclude such other details when they are required. Reference Section SAE J512—Automotive Tube Fittings SAE J527—Brazed Double Wall Low Carbon Steel Tubing SAE J533—Flares for Tubing SAE J1047—Tubing - Motor Vehicle Brake System Hydraulic SAE J1291—Automotive Hydraulic Brake System - Metric Banjo Bolt Connections ISO4038—Road vehicles—Hydraulic braking systems—Pipes, tapped holes, males fittings and hose end fittings EN 10278 (DIN)—Dimensions & Tolerances of Bright Steel Products Developed by the SAE Automotive Brake and Steering Hose Standards Committee
