Flat, round
NSN 6650-01-571-7122
NSN 5910-00-540-1167
NSN 7035-01-472-1999
NSN 5975-00-785-9288
NSN 5975-01-049-4517
NSN 6620-01-327-3011
NSN 5855-01-547-6540
NSN 7035-01-114-3134
NSN 6650-01-041-9846
NSN 6150-01-298-6352
NSN 6145-01-401-3713
NSN 4140-01-199-3590