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Unit of Measure

Series

SFJ

Material

4130 Steel

Material Specification

MIL-S-6758

Heat Treat

125 KSI UTS min

Finish

Cadmium plate per QQ-P-416, Type II, Class 3

Military Part Number

MS51551D106A9

Lockring Part Number

RLRR28SA8

Lockring Military Part Number

MS51990-106P

Nut End Type

Undrilled

A Nut End Thread Size

0.3125-24 UNJF-3A

B Stud End Thread Size

0.3750-16

B Stud End Thread-Pitch Diameter

0.3358-0.3378 in

B Stud End Thread-Minor Diameter

0.2906-0.3017 in

C Max

0.103 in

D ±.015

0.700 in

E ±.015

0.880 in

L ±.015

0.562 in