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Unit of Measure

Series

 N/A SFA( )

Material

 N/A A286 CRES

Material Specification

 N/A AMS 5731,AMS 5734

Heat Treat

 N/A 130 KSI UTS min

Finish

 N/A Passivate per QQ-P-35

AND Standard

 N/A 20004

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 UNF-3A

B Stud End Thread Size

 N/A 0.5000-13

B Stud End Thread-Pitch Diameter

 N/A 0.4512-0.4537 in

B Stud End Thread-Minor Diameter

 N/A 0.3963-0.4093 in

C

 N/A 1.135-1.145 in

D min full THD

 N/A 0.812 in

E ±.015

 N/A 0.570 in

F ±.015

 N/A 0.810 in

G ±.015

 N/A 0.170 in

H - Diameter

 N/A 0.106 in

L ±.015

 N/A 1.125 in

TYPE_SET

 N/A 2

Notes

 N/A
  • <4>Nut end lengths "C" are designed to meet AND standards after stud serrated collar is installed .010-.020 below the surface of the parent material.
  • 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.
  • SFA and SFB studs are only furnished to dimensions shown. Coding of modifications is not permissible.
  • <8>2 max incomplete threads.
  • Mating lockring is not included with stud. It must be ordered separately.