A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6150-01-585-8060
NSN 5950-01-421-4138
NSN 5999-01-369-6645
NSN 6650-01-328-8363
NSN 5999-00-700-0602
NSN 5996-00-379-8785
NSN 5960-01-328-8248
NSN 6145-01-356-0145
NSN 5945-01-492-9460
NSN 5920-01-383-7108
NSN 5920-01-091-5925
NSN 6130-00-227-2124