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Unit of Measure

Insert Type

Standard

Series

RDJ300

Material Type

4340 Steel (Alternate 4140 Steel)

Material Specification

MIL-S-5000 (AMS-S-5625)

Heat Treat

160-180 KSI UTS

Finish

Cadmium Plate per AMS-QQ-P-416, Type II, Class 3

Lockring Howmet Part Number

RLRR21SB6

Lockring Military Part Number

MS51990-104P

Internal Thread Lock

Yes
A - Internal Thread, Class 3B1 0.1640-36 UNJF

B - External Thread

0.2500-28

B - External Thread - Pitch Diameter

0.2271-0.2286 in

B - External Thread - Minor Diameter

0.2014-0.2080 in

C - Length ±.015

0.380 in

D ±.015

0.250 in

E ±.005

0.047 in

F ±.005

0.166 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.