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
1 2 3 4 

Item #

Basic Lockring Size

Material Type

Material Specification

Heat Treat

Finish

C - Thickness

RL47SA8-E0137 N/A 47 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 QQ-Z-325, Type II, Class 3 N/A 0.130 in
RL47SA10-E0137 N/A 47 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 QQ-Z-325, Type II, Class 3 N/A 0.161 in
RL50SA6-E0137 N/A 50 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 QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL56SA6-E0137 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 Zinc Plate per QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL56SA8-E0137 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 Zinc Plate per QQ-Z-325, Type II, Class 3 N/A 0.130 in
RL56SA11-E0137 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 Zinc Plate per QQ-Z-325, Type II, Class 3 N/A 0.176 in
RL64SA6-E0137 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 Zinc Plate per QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL64SA8-E0137 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 Zinc Plate per QQ-Z-325, Type II, Class 3 N/A 0.138 in
RL64SA11-E0137 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 Zinc Plate per QQ-Z-325, Type II, Class 3 N/A 0.176 in
RL72SA6-E0137 N/A 72 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 QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL72SA8-E0137 N/A 72 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 QQ-Z-325, Type II, Class 3 N/A 0.130 in
RL72SA11-E0137 N/A 72 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 QQ-Z-325, Type II, Class 3 N/A 0.176 in
RL82SA6-E0137 N/A 82 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 QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL82SA12-E0137 N/A 82 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 QQ-Z-325, Type II, Class 3 N/A 0.193 in
RL90SA6-E0137 N/A 90 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 QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL90SA12-E0137 N/A 90 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 QQ-Z-325, Type II, Class 3 N/A 0.193 in
RL100SA1512-E0137 N/A 100 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 QQ-Z-325, Type II, Class 3 N/A 0.193 in
RL124SA12-E0137 N/A 124 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 QQ-Z-325, Type II, Class 3 N/A 0.193 in
RL146SA6-E0137 N/A 146 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 QQ-Z-325, Type II, Class 3 N/A 0.099 in
RL160SA12-E0137 N/A 160 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 QQ-Z-325, Type II, Class 3 N/A 0.193 in
Unit of Measure
1 2 3 4