Flat, round
NSN 5935-01-580-2790
NSN 6105-01-201-8257
NSN 4140-00-036-6447
NSN 5895-01-529-3824
NSN 6130-01-267-1612
NSN 5855-01-098-9038
NSN 5996-01-099-4305
NSN 5855-01-584-7695
NSN 5960-01-426-4242
NSN 5935-00-221-7004
NSN 5910-01-253-0055
NSN 6135-01-026-9960