A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5925-01-107-6624
NSN 5915-01-204-9482
NSN 5999-00-348-4427
NSN 6130-00-811-0418
NSN 6150-01-026-0913
NSN 7035-01-466-6251
NSN 6650-01-450-0790
NSN 5960-00-794-7463
NSN 5920-00-942-2674
NSN 6105-01-561-5923
NSN 5985-01-250-3474
NSN 5999-01-533-9899