SAE J514, Straight Thread O-Ring Boss (ORB)
SAE J514, Straight Thread O-Ring Boss (ORB)
This straight thread connection uses the same threads as the JIC 37° shown above. However the 37° flare has been removed and an o-ring has been added. When mated with a female o-ring boss port the o-ring is trapped in a special tapered counter bore to affect the seal.
Guide on how to properly measure threads.
Download our O-ring Boss (ORB) thread profiles for a printable, actual O-Ring Boss (ORB) profiles. You will need to have Adobe Reader to view and print the file.
This straight thread connection uses the same threads as the JIC 37° shown above. However the 37° flare has been removed and an o-ring has been added. When mated with a female o-ring boss port the o-ring is trapped in a special tapered counter bore to affect the seal.
Guide on how to properly measure threads.
Download our O-ring Boss (ORB) thread profiles for a printable, actual O-Ring Boss (ORB) profiles. You will need to have Adobe Reader to view and print the file.
| SAE J514, Straight Thread O-Ring Boss | ||||||
| Dash Size |
Inch Size |
Thread | Male Thread O.D. mm |
Male Thread O.D. inches |
Female Thread I.D. mm |
Female Thread I.D. inches |
| 2 | 1/8 | 5/16-24 | 7.9 | .31 | 6.9 | .27 |
| 3 | 3/16 | 3/8-24 | 9.6 | .38 | 8.6 | .34 |
| 4 | 1/4 | 7/16-20 | 11.2 | .44 | 9.9 | .39 |
| 5 | 5/16 | 1/2-20 | 12.7 | .50 | 11.4 | .45 |
| 6 | 3/8 | 9/16-18 | 14.2 | .56 | 12.9 | .51 |
| 8 | 1/2 | 3/4-16 | 19.0 | .75 | 17.0 | .67 |
| 10 | 5/8 | 7/8-14 | 22.3 | .88 | 20.3 | .80 |
| 12 | 3/4 | 1-1/16-12 | 26.9 | 1.06 | 24.9 | .98 |
| 14 | 7/8 | 1-3/16-12 | 30.0 | 1.18 | 27.7 | 1.09 |
| 16 | 1 | 1-5/16-12 | 33.3 | 1.31 | 31.0 | 1.22 |
| 20 | 1-1/4 | 1-5/8-12 | 41.4 | 1.63 | 39.1 | 1.54 |
| 24 | 1-1/2 | 1-7/8-12 | 47.7 | 1.88 | 45.5 | 1.79 |
| 32 | 2 | 2 -12 | 63.5 | 2.50 | 61.2 | 2.41 |
