The ring has a diameter of 1.2500 inches
NSN 5985-00-862-8110
NSN 6150-01-392-6750
NSN 5985-01-055-6339
NSN 5950-01-643-5250
NSN 5855-01-467-3802
NSN 7035-01-235-2295
NSN 6220-01-134-1005
NSN 5945-01-363-9209
NSN 5905-01-477-3308
NSN 5915-01-411-9954
NSN 5996-00-150-8842
NSN 6610-01-168-3573