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Unit of Measure

Series

SFCH

Material Specification

AMS 5731 or AMS 5734

Stud Material

A286 CRES

Stud Heat Treat

130 KSI UTS min

Lockring Drive Tool Part Number

SFC25DH16

A Nut End Thread Size MIL-S-8879

0.2500-28 UNJF-3A

B Nut End Thread Size MIL-S-8879

0.2500-20 UNJC 3A

M Thread Size MIL-S-8879

0.2500-28 UNJF 3B

C ±.020

0.610 in

D Min

0.375 in

F - Dia

0.227 in

H - Min

0.176 in

J - Dia Ref

0.354 in

N -Dia +.003 -.000

0.337 in

T Number of Teef

12

P +.020 -.000

0.128 in

Q Min

0.623 in

R Min

0.750 in

S - Dia +.010 -.000

0.367 in

L ±.015

1.750 in

E Min. Full Thread Length

0.688 in

Lockring Material

Inconel 718

Lockring Heat Treart

230 KSI UTS Min

Lockring Material Specification

AMS 5662