A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6145-00-101-9857
NSN 5925-01-028-4085
NSN 5910-01-323-1464
NSN 5999-01-546-2796
NSN 5905-01-485-3401
NSN 5925-01-577-2556
NSN 5855-01-445-6551
NSN 5985-01-464-9053
NSN 5895-01-650-1358
NSN 5998-01-594-4673
NSN 6145-01-654-6699
NSN 5895-01-230-7319