Flat, round
NSN 5950-01-105-0342
NSN 6150-01-533-1540
NSN 7035-00-507-5380
NSN 5895-00-901-2186
NSN 6150-01-608-4973
NSN 6650-01-286-3417
NSN 6135-01-504-4309
NSN 2925-00-816-8765
NSN 5920-01-108-8256
NSN 6645-00-450-2209
NSN 5895-01-422-9003
NSN 6130-01-447-3164