Thread & Dimensions
A internal thread (Class 3B)
9/16-18 UNF
B external thread (Class 3A)
11/16-12 UN
Ø max minor special
.6130
Ø C (+.008/-.002)
.571
D (+.015/-.000)
.145
F
.550
G (±.010)
.840
J (±1)
42
Through-hole preparation
Min. full THD depth 1.248; Min. full depth .873
Blind-hole preparation
Min. full THD depth 1.081; Min. full depth .873
Material & Finish
Material
A286 per AMS5731 or AMS 5734
Finish
PASSIVATED per AMS 2700 & SFL coated per SAE AS5272, Type 1
Temperature range
-400°/+650°F
Heat treat
RC 32-40
Magnetic
NO