Differentiated by 1-1/4 in. Diameter hole
NSN 5985-00-586-9875
NSN 5975-00-202-2367
NSN 5985-01-616-1714
NSN 5920-01-450-0614
NSN 5855-01-410-8979
NSN 6320-01-369-5014
NSN 6110-00-556-0080
NSN 5895-00-603-0471
NSN 6610-01-179-4922
NSN 5965-01-358-3198
NSN 6610-01-327-7148
NSN 6110-00-042-4712