American Connections SAE J514 37° Hydraulic

This connection is very common in fluid power systems. Both the male and female halves of the connections have 37° seats. The seal takes place by establishing a line contact between the male flare and the female cone seat. The threads hold the connection mechanically. Caution: S In the –02, –03, –04, –05, –08 and –10 sizes, the threads of the SAE 45° flare and the SAE 37° flare are the same. However, the sealing surface angles are not the same American Connections SAE J512 Inverted

This connection is frequently used in automotive systems. The male connector can either be a 45° flare in the tube fitting form or a 42° seat in the machined adapter form. The female has a straight thread with a 42° inverted flare. The seal takes place on the flared surfaces. The threads hold the connection mechanically.

American Connections SAE J512 45° 

This connection is commonly used in refrigeration, automotive and truck piping systems. The connector is frequently made of brass. Both the male and female connectors have 45° seats. The seal takes place between the male flare the female cone seat. The threads hold the connection mechanically. Caution: S In the –02, –03, –04, –05, –08 and –10 sizes, the threads of the SAE 45° flare and the SAE 37° flare are the same. However, the sealing surface angles are not the same.

Nominal Inch Dash Thread MaleThread FemaleThread Size Size Size O.D. Inch I.D. Inch Fraction Decimal Fraction Decimal 1/8 02 5/16-24 5/16 0.31 9/32 0.27 3/16 03 3/8-24 3/8 0.38 11/32 0.34 1/4 04 7/16-20 7/16 0.44 13/32 0.39 5/16 05 1/2-20 1/2 0.50 15/32 0.45 3/8 06 5/8-18 5/8 0.63 9/16 0.57 1/2 08 3/4-16 3/4 0.75 11/16 0.69 5/8 10 7/8-14 7/8 0.88 13/16 0.81 3/4 12 1-1/16-14 1-1/16 1.06 1 0.99 7/8 14 1-1/4-12 1-1/4 1.25 1-5/32 1.16 1 16 1-3/8-12 1-3/8 1.38 1-9/32 1.29