A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5975-01-558-4419
NSN 6610-01-406-4985
NSN 6130-01-019-4064
NSN 5920-00-837-2633
NSN 5895-01-024-7799
NSN 6135-01-430-3119
NSN 5920-00-885-0367
NSN 5905-00-269-5452
NSN 5975-00-820-1581
NSN 5905-00-932-2952
NSN 5945-01-044-8242
NSN 6105-00-749-8905