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Unit of Measure

Insert Type

Standard

Series

RJ300

Material Type

17-4PH CRES

Material Specification

AMS 5643

Heat Treat

COND H1025

Finish

Passivate per AMS2700

Military Part Number

MS51991-311

Lockring Howmet Part Number

RLRR64SB11

Lockring Military Part Number

MS51990-111P
Internal Thread Lock1 No

A - Internal Thread, Class 3B

0.5625-18 UNJF

B - External Thread

0.8750-14

B - External Thread - Pitch Diameter

0.8291-0.8316 in

B - External Thread - Minor Diameter

0.7786-0.7904 in

C - Length ±.015

0.880 in

D ±.015

0.620 in
  • 1 AS8879 Internal Thread
  • 2 Step drills are designed for thru hole drilling. When used to drill a blind hole, it may be necessary to grind the drill to suit the depth required.
  • 3 Step drills are designed for thru hole drilling. When used to drill a blind hole, it may be necessary to grind the drill to suit the depth required.
  • 4 Taps are not supplied by Howmet.
  • 5 Removal drills are not supplied by Howmet.