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Automotive Tube Fittings
- Ground Vehicle Standard
- J512_202203
- Reaffirmed
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Standard covers complete general and dimensional specifications for the various types of tube fittings intended for general application in the automotive, appliance, and allied fields. See SAE J1131 for the performance requirements of reusable (push to connect) fittings intended for use in automotive air brake systems.
Flare type fittings shall be as specified in Figures 1 to 4 and Tables 3 to 5.
NOTE—For sizes 3/16 to 3/8 and 1/2 to 3/4 the flare type fittings depicted in Figures 1A to 3C are identical with the corresponding refrigeration tube fittings specified in SAE J513. Special size combination fittings 3/16 to 3/8 and 1/2 to 3/4 shall be as specified in SAE J513.
Inverted flared type fittings shall be as specified in Figures 5 to 11 and Tables 3, 6, 7, 8, and 9. Gages and gaging procedures pertaining to inverted flared tube fittings are given in Appendix A.
NOTE—The seat dimensions specified in Table 6 are predicated on practical threading limitations in steel fittings and use of these fittings with double flared tubing. Therefore, wherever purchasers contemplate using these fittings with single flared tubing, it is recommended that the optional inverted flare nut (Figure 9A) be used.
Tapered sleeve compression type fittings intended for general use with annealed copper alloy tubings shall be as specified in Figures 12 to 17 and Tables 3, 10, 11, and 12. To assure satisfactory performance, spherical sleeve compression type fitting components (see SAE J246) should not be intermixed with tapered sleeve compression type fitting components when assembling connections in areas where both types are available.
Dimensions of single and double 45 degree flares on tubing to be used in conjunction with flared and inverted flared fittings are given in Figure 2 and Table 3 of SAE J533.
The following general specifications supplement the dimensional data for all types of fittings contained in Tables 3 to 13 with respect to all unspecified detail.
Rationale
SAE J512 has been reaffirmed to comply with the SAE Five-Year Review policy.
Recommended Content
| Ground Vehicle Standard | Refrigeration Tube Fittings—General Specifications |
| Ground Vehicle Standard | Flares for Tubing |
| Ground Vehicle Standard | Spherical and Flanged Sleeve (Compression) Tube Fittings |
Data Sets - Support Documents
No Datasets Available
Issuing Committee
Air Brake Tubing and Tube Ftg Committee
The Air Brake Tubing and Tube Fittings Committee develops and maintains SAE Standards, Recommended Practices and Information Reports relating to tubing and fittings of air brake systems. Participants in the Air Brake Tubing and Tube Fittings Committee of the Truck and Bus Brake and Advanced Driver Assistance Systems Steering Committee includes OEMs, suppliers, consulting firms, government and other interested parties.
Reference
| Number | Title |
|---|---|
| ANSI/B1.1 | This document is not part of the subscrption. |
| ASTMB117 | This document is not part of the subscrption. |
| J246_201210 | Spherical and Flanged Sleeve (Compression) Tube Fittings |
| J246_201711 | Spherical and Flanged Sleeve (Compression) Tube Fittings |
| J476 | This document is not part of the subscrption. |
| J476_201302 | Dryseal Pipe Threads |
| J533_201702 | Flares for Tubing |
| J846_201303 | Coding Systems for Identification of Fluid Conductors and Connectors |
| J846_201511 | Coding Systems for Identification of Fluid Conductors and Connectors |
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