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
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
Crownserts is offering part CS0440AL as factory new.