Howmet Aerospace - RL Series Lock Rings

Unit of Measure

Items	RL16SA5 RL Series Lock Rings	RL16SM5 RL Series Lock Rings	RL16SU5 RL Series Lock Rings	RL16S3C5 RL Series Lock Rings	RL16SS5 RL Series Lock Rings
Basic Lockring Size	N/A 16
Material Type¹	N/A 4130 Steel or 4140 Steel or 8740 Steel	N/A 303 Se CRES	N/A A286 CRES	N/A 718 CRES	N/A 4340 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 5731 or AMS 5732 or AMS 5734 or AMS 5737	N/A AMS 5662	N/A AMS-S-5000
Heat Treat	N/A 36-45 HRc per AMS 2759	N/A None	N/A 32-40 HRc	N/A 230 KSI UTS Min	N/A 150-165 KSI UTS
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 Passivate per AMS2700	N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3
A - Dia +.005 -.004	N/A 0.274 in
B - Dia +.004 -.003	N/A 0.161 in
C - Thickness	N/A 0.084 in
D - Dia	N/A 0.223 in
E - Nr. of External Serrations (Total Teeth), Approx	N/A 20.000
F - Nr. of Internal Serrations	N/A 14.000
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).