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Unit of Measure

Part Type

Stud

Series

SF

Simplified Material

Steel

Material

4130 Steel

Material Specification

MIL-S-6758

Heat Treat

125,000 PSI UTS min

Finish

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

Military Part Number

MS51989-105-36

Lockring Part Number

RLRR24SA7

Lockring Military Part Number

MS51990-105P

Nut End Type

Undrilled

A Nut End Thread Size

0.2500-28 UNF-3A

B Stud End Thread Size

0.3125-18

B Stud End Thread-Pitch Diameter

0.2778-0.2795 in

B Stud End Thread-Minor Diameter

0.2373-0.2474 in

C

9

D ±.015

0.500 in

E ±.015

0.390 in

F ±.015

0.560 in

L ±.015

2.250 in

L Dash Code No.

36.000