Thread & Dimensions
A internal thread (Class 3B)
7/16-20 UNF
B external thread (Class 3A)
1/2-20 UNF
Ø max minor special
.4630
Ø C (+.008/-.002)
.439
D (+.015/-.000)
.135
E
.377
G (±.010)
.660
J (±1)
39
Through-hole preparation
Min. full THD depth .920; Min. full depth .695
Blind-hole preparation
Min. full THD depth .820; Min. full depth .695
Material & Finish
Material
17-4PH, Cond H1025 per AMS 5643
Finish
PASSIVATED per AMS 2700 & Silver Plated per AMS 2411 (.0002 min. thickness)
Temperature range
-110°/+900°F
Heat treat
RC 35-42
Magnetic
YES