Thread & Dimensions
A internal thread (Class 3B)
4-40 UNC
B external thread (Class 3A)
8-32 UNC
Ø max minor special
.1380
Ø C (+.008/-.002)
.116
D (+.015/-.000)
.060
F
.100
G (±.010)
.190
J (±1)
15
Through-hole preparation
Min. full THD depth .361; Min. full depth .220
Blind-hole preparation
Min. full THD depth .298; Min. full depth .220
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.