Thread & Dimensions
A internal thread (Class 3B)
1/2-20 UNF
B external thread (Class 3A)
5/8-18UNF
Ø max minor special
.5618
Ø C (+.008/-.002)
.528
D (+.015/-.000)
.135
F ref
.490
G (±.010)
.750
Through-hole preparation
Min. full THD depth 1.035; Min. full depth 0,785
Blind-hole preparation
Min. full THD depth .924; Min. full depth 0,785
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