A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 2925-01-432-8452
NSN 5925-00-257-8934
NSN 5895-01-366-8851
NSN 5975-01-397-7218
NSN 5945-00-883-8417
NSN 5960-01-347-6791
NSN 2925-00-964-7128
NSN 5930-00-811-0315
NSN 6610-00-925-5064
NSN 5855-01-503-6973
NSN 7035-01-364-8454
NSN 5996-01-147-6054