close
close
Please click here to view the Installation and Removal

Unit of Measure

Insert Type

N/A Standard

Series

N/A RDJ900

Material Type

N/A 17-4PH CRES

Material Specification

N/A AMS 5643

Heat Treat

N/A COND H1025

Finish

N/A Passivate per QQ-P-35, Plus Solid Film Lube

Lockring Rosan Part Number

N/A RLRR28SA8

Lockring Military Part Number

N/A MS51990-106P

Internal Thread Lock

N/A Yes
A - Internal Thread, Class 3B1 N/A 0.2500-20 UNJC

B - External Thread

N/A 0.3750-24

B - External Thread - Pitch Diameter

N/A 0.3479-0.3498 in

B - External Thread - Minor Diameter

N/A 0.3185-0.3257 in

C - Dia ±.005

N/A 0.257 in

D ±.005

N/A 0.080 in

E - Length ±.015

N/A 0.500 in

F ±.015

N/A 0.330 in

N/A

  • The external thread has a special pitch diameter and minor diameter which installs into a MIL-S-8879 Class 3B, MIL-S-7742 Class 3B, or National Class 3 tapped hole.
  • Insert lengths shown are based on installation in 2024-T4 Aluminum and in such materials will accommodate tension loads up to the strength of a mating bolt heat treated to 145,000 PSI UTS. If this design criteria is required in parent materials of lower mechanical properties, longer insert lengths should be specified. Mating bolts have a thread engagement of 1.5 diameters or if insert has a thread lock, the bolt should extend through the insert 2 pitches including chamfer.
  • Mating lockring is not included with insert. It must be ordered separately.

  • 1 MIL-S-8879 Internal Thread