Thread & Dimensions
A internal thread (Class 3B)
3/8-16 UNC
B external thread (Class 3A)
7/16-20 UNF
Ø max minor special
.4010
Ø C (+.008/-.002)
.377
D (+.015/-.000)
.110
F
.370
G (±.010)
.560
J (±1)
34
Through-hole preparation
Min. full THD depth .820; Min. full depth .595
Blind-hole preparation
Min. full THD depth .720; Min. full depth .595
Material & Finish
Material
Alloy Steel 4130 per AMS 6370
Finish
Cadmium Plated per AMS-QQ-P-416 Type 2, Class 3 & SFL per SAE AS5272
Temperature range
Up to 450+°F
Heat treat
RC 25-34
Magnetic
YES