Standard SAE J514 370 (JIC)

The Society of Automotive Engineers (SAE) specifies a 37° angle flare or seat be used with high pressure hydraulic tubing. These are commonly called JIC couplings. The JIC 37° flare male will mate with a JIC female only. The JIC male has straight threads and a 37° flare seat. The JIC female has straight threads and a 37° flare seat. The seal is made on the 37° flare seat by establishing a line contact between the male flare and the female cone seat. The threads hold the connection mechanically.
STRAIGHT FEMALE JIC 74°
STRAIGHT FEMALE WITH HEXAGON JIC 74°
ELBOW FEMALE JIC 74°
45? FEMALE JIC 74°
MALE JIC 74°