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Unit of Measure

Insert Type

Standard

Series

RJ300

Material Type

A286 CRES

Material Specification

AMS 5731 or AMS 5732 or AMS 5734 or AMS 5737

Heat Treat

83 HRB Min

Finish

Passivate per AMS2700, Plus Solid Film Lube

Lockring Howmet Part Number

RLRR18SB6

Lockring Military Part Number

MS51990-103P
Internal Thread Lock1 Yes

A - Internal Thread, Class 3B

0.1380-40 UNJF

B - External Thread

0.2160-28

B - External Thread - Pitch Diameter

0.1931-0.1946 in

B - External Thread - Minor Diameter

0.1674-0.1740 in

C - Length ±.015

0.310 in

D ±.015

0.190 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.