A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5975-01-154-9194
NSN 5895-00-067-4968
NSN 5975-01-485-3210
NSN 6145-00-717-8421
NSN 5925-01-336-1297
NSN 7035-00-225-6499
NSN 6650-01-577-5309
NSN 4140-01-248-4610
NSN 5945-00-565-9723
NSN 6145-01-258-0908
NSN 5935-01-222-0012
NSN 5930-01-157-9824