Thread & Dimensions
A internal thread (Class 3B)
8-32 UNC
B external thread (Class 3A)
12-28 UNF
Ø max minor special
.1890
Ø C (+.008/-.002)
.169
D (+.015/-.000)
.080
E
.138
G (±.010)
.250
J (±1)
20
Through-hole preparation
Min. full THD depth .441; Min. full depth .280
Blind-hole preparation
Min. full THD depth .369; Min. full depth .280
Material & Finish
Material
17-4PH, Cond H1025 per AMS 5643
Finish
PASSIVATED per AMS 2700 & SFL coated per SAE AS5272, Type I
Temperature range
-110°/+650°F
Heat treat
RC 35-42
Magnetic
YES
Material note
Standard material code; no suffix added to the part number.