The ring has a diameter of 1.2500 inches
NSN 6650-01-020-6148
NSN 7035-00-946-2642
NSN 5996-01-314-9048
NSN 4140-01-614-0624
NSN 5920-00-805-7132
NSN 6220-01-630-8908
NSN 6145-01-237-2710
NSN 6145-01-487-8043
NSN 5950-01-519-0850
NSN 7035-01-229-0941
NSN 6145-00-830-8210
NSN 5975-01-605-0860