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Unit of Measure

Series

SFC S2

Stud Material

8740 Steel or 4130 Steel

Material Specification

AMS 6322 or AMS-S-6758

Stud Heat Treat

26-34 HRc

Finish

Cadmium Plate per AMS- QQ-P-416, Type II, Class 3

Lockring Drive Tool Part Number

SFC31D16

Lockring Material

4130 Steel per AMS 6370, 4140 Steel per AMS 6382, or 8740 Steel per AMS 6322 FN-0208-80HT per ASTM B484, Grade I, Class C, Type I, (Powder Metal Nickel Steel)

Lockring Heat Treart

36-45 HRC for 4130 Steel, 4130 Steel, 4140 Steel, or 8740 Steel FN-02-80HT, Apparent Hardness 63 HRA Min

Nut End Type

Drilled

T1 Nut End Thread Size AS8879

0.3125-24 UNJF-3A

T2 Nut End Thread Size AS8879

0.3125-18 UNJC 3A

T3 Thread Size AS8879

0.3125-18 UNJC 3B

B Min

0.469 in

C ±.020

0.760 in

D +.005 -.002

0.067 in

E

0.160 in

F - Min

0.747 in

G +.020 -.000

0.169 in

H - Min

0.890 in

J - Min

1.000 in

K +.003 -.000

0.381 in

M - Boss Dia Min

0.500 in

L ±.015

1.562 in

R - Ring Dia +.005 -.004

0.399 in

A Min. Full Thread Length

0.719 in