Howmet Fastening Systems
Howmet Fastening Systems
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Website: www.hfs.howmet.com
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RLR Type lockrings have been inactive for new design since 1969 and are superseded by the improved "RLRR" type lockrings.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).

RLR Series Lock Rings
Unit of Measure
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Item #

Basic Lockring Size

Material Type

Material Specification

Heat Treat

Finish

C - Thickness

RLR72SM11 N/A 72 N/A 303 CRES N/A ASTM A581, ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.176 in
RLR82SM12 N/A 82 N/A 303 CRES N/A ASTM A581, ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.193 in
RLR90SM12 N/A 90 N/A 303 CRES N/A ASTM A581, ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.193 in
RLR100SM12 N/A 100 N/A 303 CRES N/A ASTM A581, ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.193 in
RLR124SM12 N/A 124 N/A 303 CRES N/A ASTM A581, ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.193 in
RLR160SM12 N/A 160 N/A 303 CRES N/A ASTM A581, ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.193 in
RLR16SN5 N/A 16 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.084 in
RLR18SN6 N/A 18 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.099 in
RLR21SN6 N/A 21 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.099 in
RLR23SN7 N/A 23 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.123 in
RLR24SN7 N/A 24 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.112 in
RLR27SN8 N/A 27 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.138 in
RLR28SN8 N/A 28 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.138 in
RLR31SN9 N/A 31 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.145 in
RLR38SN9 N/A 38 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.145 in
RLR43SN9 N/A 43 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.145 in
RLR47SN10 N/A 47 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.161 in
RLR56SN11 N/A 56 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.176 in
RLR64SN11 N/A 64 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.176 in
RLR72SN11 N/A 72 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.176 in
RLR82SN12 N/A 82 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.193 in
RLR90SN12 N/A 90 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.193 in
RLR100SN12 N/A 100 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.193 in
RLR124SN12 N/A 124 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.193 in
RLR160SN12 N/A 160 N/A 4130 Steel or 4140 Steel N/A AMS-S-5000, AMS 6382, AMS 6349 or AMS 5626 N/A 160-180 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.193 in
Unit of Measure
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