SAE J512, 45° Flare

SAE J512, 45° Flare

The SAE 45° flare connectors seal in the same manner and are similar to the 37° connectors except for the flare angle. When the straight threads are engaged, the 45° male seat seals on the 45° female flare seat. 45° connectors are commonly found in automotive and refrigeration applications, on brass adapters, and are generally used at lower pressures than 37° JIC connectors. Check the threads and flares carefully to make positive identification.

Guide on how to properly measure threads.

Download our 45° SAE Flare thread profiles for a printable, actual SAE flare size profiles. You will need to have Adobe Reader to view and print the file.


SAE J512, 45° Flare
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 5/8-18 15.7 .62 14.2 .56
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 1-1/16-14 26.9 1.06 25.1 .99
14 7/8 1-¼-12 31.7 1.25 29.5 1.16
16 1 1-3/8-12 35.0 1.38 32.5 1.28
Scroll to top