The ring has a diameter of 1.2500 inches
NSN 6645-00-489-3155
NSN 5855-01-525-8017
NSN 6620-01-135-0090
NSN 5950-01-204-0803
NSN 5910-01-350-3252
NSN 6130-01-272-9765
NSN 6135-01-467-5100
NSN 6130-00-093-5863
NSN 6620-00-905-6590
NSN 5905-01-197-2517
NSN 6240-01-058-5061
NSN 5998-01-131-3333