Howmet Aerospace - RL Series Lock Rings

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Items	RL16SA5 RL Series Lock Rings	RL16SM5 RL Series Lock Rings	RL16S3C5 RL Series Lock Rings	RL16SS5 RL Series Lock Rings	RL18SA6 RL Series Lock Rings
Basic Lockring Size	N/A 16	N/A 16	N/A 16	N/A 16	N/A 18
Material Type¹	N/A 4130 Steel or 4140 Steel or 8740 Steel	N/A 303 Se CRES	N/A 718 CRES	N/A 4340 Steel	N/A 4130 Steel or 4140 Steel or 8740 Steel
Material Specification	N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel)	N/A ASTM A582 or AMS 5640	N/A AMS 5662	N/A AMS-S-5000	N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel)
Heat Treat	N/A 36-45 HRc per AMS 2759	N/A None	N/A 230 KSI UTS Min	N/A 150-165 KSI UTS	N/A 36-45 HRc per AMS 2759
Finish	N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3	N/A Passivate per AMS2700	N/A Passivate per AMS2700	N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3	N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3
A - Dia +.005 -.004	N/A 0.274 in	N/A 0.274 in	N/A 0.274 in	N/A 0.274 in	N/A 0.308 in
B - Dia +.004 -.003	N/A 0.161 in	N/A 0.161 in	N/A 0.161 in	N/A 0.161 in	N/A 0.189 in
C - Thickness	N/A 0.084 in	N/A 0.084 in	N/A 0.084 in	N/A 0.084 in	N/A 0.099 in
D - Dia	N/A 0.223 in	N/A 0.223 in	N/A 0.223 in	N/A 0.223 in	N/A 0.255 in
E - Nr. of External Serrations (Total Teeth), Approx	N/A 20.000
F - Nr. of Internal Serrations	N/A 14.000	N/A 14.000	N/A 14.000	N/A 14.000	N/A 16.000
J	N/A
L	N/A
N - Dia +.003 -.006	N/A
P - Dia ±.005	N/A
¹ The Preferred Alloy Steel Material is the 4130, 4140 or 8740 (SA code).