A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6650-01-604-9315
NSN 5985-00-967-2011
NSN 5999-01-289-3080
NSN 5945-01-484-7194
NSN 6650-00-170-5095
NSN 6130-00-141-8317
NSN 5990-00-583-9577
NSN 5855-01-258-6180
NSN 5945-00-140-4094
NSN 6110-01-183-2564
NSN 6145-00-419-0550
NSN 5965-01-607-8609