Howmet Fastening Systems
Howmet Fastening Systems
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Email: HFSTechSupport@howmet.com
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RLR Type lockrings have been inactive for new design since 1969 and are superseded by the improved "RLRR" type lockrings.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

RLR28S3C8 N/A 28 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.138 in
RLR31S3C9 N/A 31 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.145 in
RLR33S3C9 N/A 33 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.145 in
RLR38S3C9 N/A 38 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.145 in
RLR43S3C9 N/A 43 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.145 in
RLR47S3C10 N/A 47 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.161 in
RLR56S3C11 N/A 56 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.176 in
RLR64S3C11 N/A 64 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.176 in
RLR72S3C11 N/A 72 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.176 in
RLR82S3C12 N/A 82 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.193 in
RLR90S3C12 N/A 90 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.193 in
RLR100S3C12 N/A 100 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.193 in
RLR124S3C12 N/A 124 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.193 in
RLR160S3C12 N/A 160 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.193 in
RLR16SA5-E0432 N/A 16 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.084 in
RLR18SA6-E0432 N/A 18 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.099 in
RLR21SA6-E0432 N/A 21 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.099 in
RLR23SA7-E0432 N/A 23 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.123 in
RLR24SA7-E0432 N/A 24 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.112 in
RLR27SA8-E0432 N/A 27 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.138 in
RLR28SA8-E0432 N/A 28 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.138 in
RLR31SA9-E0432 N/A 31 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.145 in
RLR33SA9-E0432 N/A 33 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.145 in
RLR38SA9-E0432 N/A 38 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.145 in
RLR43SA9-E0432 N/A 43 N/A 4130 Steel or 4140 Steel or 8740 Steel N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel) N/A 36-45 HRc per AMS 2759 N/A Zinc Plate per ASTM B633, Type II, Class Fe/Zn 12 N/A 0.145 in
Unit of Measure
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