Thread & Dimensions
Internal thread A (in, Class 3B)
.5000-13 UNC
External thread B (in)
.6250-18 UNF
External altered minor dia max (in)
.5618
C (in, ±.010)
.750
D dia (in, +.008/-.002)
.528
E (in, +.015/-.000)
.135
F (in, ref)
.105
G (in, ref)
.439
Min shear engagement (in²)
.8717
Blind-hole drill depth min (in)
.924
Material & Finish
Material
A286 CRES
Finish
Solid film lubricant per MIL-PRF-46010
Hardness
32–40 HRC