Howmet Fastening Systems
Howmet Fastening Systems
Phone: Sales +1 800 992 4444
Technical Support +1 310 784 6409
Email: HFSTechSupport@howmet.com
Website: www.hfs.howmet.com
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RL Series Lock Rings
Unit of Measure
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Item #

Basic Lockring Size

Material Type

Material Specification

Heat Treat

Finish

C - Thickness

RL24SS5 N/A 24 N/A 4340 Steel N/A AMS-S-5000 N/A 150-165 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.081 in
RL24SM7 N/A 24 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.112 in
RL24SU7 N/A 24 N/A A286 CRES N/A AMS 5731 or AMS 5732 or AMS 5734 or AMS 5737 N/A 32-40 HRc N/A Passivate per AMS2700 N/A 0.112 in
RL24S3C7 N/A 24 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.112 in
RL24SS7 N/A 24 N/A 4340 Steel N/A AMS-S-5000 N/A 150-165 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.112 in
RL27SA8 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 Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.138 in
RL27SU8 N/A 27 N/A A286 CRES N/A AMS 5731 or AMS 5732 or AMS 5734 or AMS 5737 N/A 32-40 HRc N/A Passivate per AMS2700 N/A 0.138 in
RL27S3C8 N/A 27 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.138 in
RL27SS8 N/A 27 N/A 4340 Steel N/A AMS-S-5000 N/A 150-165 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.138 in
RL28SM5 N/A 28 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.081 in
RL28SU5 N/A 28 N/A A286 CRES N/A AMS 5731 or AMS 5732 or AMS 5734 or AMS 5737 N/A 32-40 HRc N/A Passivate per AMS2700 N/A 0.081 in
RL28S3C5 N/A 28 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.081 in
RL28SS5 N/A 28 N/A 4340 Steel N/A AMS-S-5000 N/A 150-165 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.081 in
RL28SA6 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 Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.099 in
RL28SM6 N/A 28 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.099 in
RL28SU6 N/A 28 N/A A286 CRES N/A AMS 5731 or AMS 5732 or AMS 5734 or AMS 5737 N/A 32-40 HRc N/A Passivate per AMS2700 N/A 0.099 in
RL28S3C6 N/A 28 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.099 in
RL28SS6 N/A 28 N/A 4340 Steel N/A AMS-S-5000 N/A 150-165 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.099 in
RL28SA8 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 Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.138 in
RL28SM8 N/A 28 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.138 in
RL28SU8 N/A 28 N/A A286 CRES N/A AMS 5731 or AMS 5732 or AMS 5734 or AMS 5737 N/A 32-40 HRc N/A Passivate per AMS2700 N/A 0.138 in
RL28S3C8 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
RL28SS8 N/A 28 N/A 4340 Steel N/A AMS-S-5000 N/A 150-165 KSI UTS N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.138 in
RL31SA9 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 Cadmium Plate per AMS-QQ-P-416, Type II, Class 3 N/A 0.145 in
RL31SM9 N/A 31 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.145 in
Unit of Measure
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