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Unit of Measure

Series

 N/A SFTJ

Material

 N/A 303 Se CRES

Material Specification

 N/A ASTM A582

Heat Treat

 N/A None

Finish

 N/A Passivate per QQ-P-35

Military Part Number

 N/A MS51551D208B13

Lockring Part Number

 N/A RLRR38SA9

Lockring Military Part Number

 N/A MS51990-108P

Nut End Type

 N/A Drilled

A Nut End Thread Size

 N/A 0.4375-20 UNJF-3A

B Stud End Thread Size

 N/A 0.5000-20

B Stud End Thread-Pitch Diameter

 N/A 0.4694-0.4711 in

B Stud End Thread-Minor Diameter

 N/A 0.4325-0.4422 in

C Max

 N/A 0.120 in

D ±.015

 N/A 0.990 in

E ±.015

 N/A 1.190 in

L ±.015

 N/A 0.812 in

Notes

 N/A
  • The stud end thread has a special pitch diameter and minor diameter which installs into a MIL-S-8879 class 3B, FED-STD-H28/2 class 3B, or National class 3 tapped hole.
  • Studs are installed in accordance with MS51995.
  • Mating lockring is not included with stud. It must be ordered separately.