Howmet Aerospace - RLRR1997 Series Lock Rings

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Unit of Measure

Items	RLRR1997-102 RLRR1997 Series Lock Rings	RLRR1997-103 RLRR1997 Series Lock Rings	RLRR1997-104 RLRR1997 Series Lock Rings	RLRR1997-105 RLRR1997 Series Lock Rings	RLRR1997-106 RLRR1997 Series Lock Rings
Size	N/A 102	N/A 103	N/A 104	N/A 105	N/A 106
Material Type¹	N/A 4130 Alloy Steel or 4140 Alloy Steel or 8740 Alloy Steel
Material Specification	N/A AMS 6370 (4130 Steel), AMS 6382 (4140 Steel), AMS 6322 (8740 Steel)
Heat Treat	N/A 36-45 HRc Hardness
Finish	N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3
A - Dia +.008 -.007	N/A 0.305 in	N/A 0.368 in	N/A 0.430 in	N/A 0.493 in	N/A 0.606 in
B - Thickness +.010 -.005	N/A 0.100 in	N/A 0.110 in	N/A 0.138 in	N/A 0.157 in	N/A 0.157 in
C ±.005	N/A 0.044 in	N/A 0.044 in	N/A 0.044 in	N/A 0.040 in	N/A 0.040 in
E - Dia +.004 -.003	N/A 0.213 in	N/A 0.266 in	N/A 0.323 in	N/A 0.390 in	N/A 0.468 in
F - Dia ± .005	N/A 0.252 in	N/A 0.315 in	N/A 0.364 in	N/A 0.425 in	N/A 0.505 in
G - Dia +.005 -.004	N/A 0.353 in	N/A 0.416 in	N/A 0.478 in	N/A 0.541 in	N/A 0.657 in
H - Dia +.003 -.006	N/A 0.310 in	N/A 0.373 in	N/A 0.435 in	N/A 0.498 in	N/A 0.611 in
J - Nr. of Internal Serrations	N/A 13.000	N/A 17.000	N/A 20.000	N/A 24.000	N/A 26.000
K +1o -2o	N/A 102.000 º	N/A 86.000 º	N/A 102.000 º	N/A 102.000 º	N/A 102.000 º
M - Nr. of Full External Serrations Each Side	N/A 4.000	N/A 5.000	N/A 6.000	N/A 7.000	N/A 7.000
N ±2º	N/A 100.000 º	N/A 98.000 º	N/A 97.000 º	N/A 96.000 º	N/A 96.000 º
R - Radius, 2 Places	N/A 0.154 in	N/A 0.186 in	N/A 0.217 in	N/A 0.248 in	N/A 0.304 in
¹ The Preferred Alloy Steel Material is the 4130, 4140 or 8740 (SA code).