Thread & Dimensions
A internal thread (Class 3B)
10-32 UNF
B external thread (Class 3A)
1/4-28 UNF
Ø max minor special
.2170
Ø C (+.008/-.002)
.192
D (+.015/-.000)
.080
F
.180
G (±.010)
.290
J (±1)
20
Through-hole preparation
Min. full THD depth .486; Min. full depth .325
Blind-hole preparation
Min. full THD depth .486; Min. full depth .325
Material & Finish
Material
17-4PH, Cond H1025 per AMS 5643
Finish
IVD ALUMINIUM coating per MIL-DTL-83488 type 2, Class 3 & SFL per SAE AS5272, Type I
Temperature range
Up to 600°F
Heat treat
RC 35-42
Magnetic
YES