Differentiated by 1-1/4 in. Diameter hole
NSN 6220-00-945-8190
NSN 6220-00-443-0594
NSN 6220-01-591-0519
NSN 6145-01-088-7999
NSN 5975-00-827-1107
NSN 5935-01-185-4155
NSN 5975-01-562-6506
NSN 6135-01-068-0119
NSN 2925-01-358-7380
NSN 5985-01-418-0804
NSN 5835-00-642-8148
NSN 6145-01-510-2083