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RLR Type lockrings have been inactive for new design since 1969 and are superseded by the improved "RLRR" type lockrings. "RLR" type lockrings will be provided for existing designs, however, it will normally be advantageous from a price and delivery standpoint to substitute the "RLRR" type lockring (ref. MS51990).

Unit of Measure

Series

RLR

Basic Lockring Size

64
Material Type1 4130 Steel or 4140 Steel or 8740 Steel

Material Specification

AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel)

Heat Treat

36-45 HRc per AMS 2759

Finish

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

A - Dia +.005 -.004

1.040 in

B - Dia +.004 -.003

0.795 in

C - Thickness

0.176 in

D - Dia

0.958 in

E - Nr. of External Serrations (Total Teeth), Approx

29.000

F - Nr. of Internal Serrations

30.000

R - Radius

0.492 in
  • 1 The Preferred Alloy Steel Material is the 4130, 4140 or 8740 (SA code).