A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5965-01-459-8203
NSN 5910-01-495-0619
NSN 6105-00-824-2364
NSN 5855-00-906-5386
NSN 5935-01-446-3775
NSN 6130-01-077-3782
NSN 5910-00-862-3552
NSN 5915-00-991-3406
NSN 5950-01-502-7019
NSN 5895-01-438-6783
NSN 5925-01-177-1147
NSN 5930-00-827-2050