A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5960-01-516-7264
NSN 5920-00-236-1118
NSN 5915-01-023-4447
NSN 5960-01-086-9650
NSN 5960-01-512-0233
NSN 5990-00-617-1422
NSN 5945-01-175-9036
NSN 5935-01-327-6904
NSN 4140-01-172-4637
NSN 6105-01-278-5799
NSN 5895-00-826-2988
NSN 6650-01-582-0189