A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6105-01-050-7795
NSN 6320-01-652-3806
NSN 5910-01-036-5152
NSN 6650-00-527-7451
NSN 6320-00-238-9973
NSN 5835-01-116-2369
NSN 6145-01-432-8313
NSN 6220-00-657-2098
NSN 5920-00-504-0564
NSN 5905-00-707-1030
NSN 5935-01-395-1207
NSN 6320-01-017-5274