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

RL50SS6 N/A 50 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
RL56SA6 N/A 56 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
RL56SM6 N/A 56 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
RL56SU6 N/A 56 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
RL56S3C6 N/A 56 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.099 in
RL56SS6 N/A 56 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
RL56SA8 N/A 56 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 0.130 in
RL56SM8 N/A 56 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.130 in
RL56SU8 N/A 56 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 0.130 in
RL56S3C8 N/A 56 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.130 in
RL56SS8 N/A 56 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 0.130 in
RL56SM11 N/A 56 N/A 303 Se CRES N/A ASTM A582 or AMS 5640 N/A None N/A Passivate per AMS2700 N/A 0.176 in
RL56SU11 N/A 56 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 0.176 in
RL56S3C11 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
RL56SS11 N/A 56 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 0.176 in
RL64SA6 N/A 64 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
RL64SU6 N/A 64 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
RL64S3C6 N/A 64 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.099 in
RL64SS6 N/A 64 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
RL64SA8 N/A 64 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
RL64SM8 N/A 64 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
RL64SU8 N/A 64 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
RL64S3C8 N/A 64 N/A 718 CRES N/A AMS 5662 N/A 230 KSI UTS Min N/A Passivate per AMS2700 N/A 0.138 in
RL64SS8 N/A 64 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
RL64SA11 N/A 64 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 0.176 in
Unit of Measure
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