A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5945-00-581-4943
NSN 6150-01-435-5176
NSN 5895-01-366-2357
NSN 5895-01-510-9431
NSN 5925-00-545-8022
NSN 5945-00-067-6712
NSN 6105-00-954-0757
NSN 5920-01-373-0019
NSN 5965-00-023-0944
NSN 6150-00-970-5206
NSN 5855-01-250-2421
NSN 5999-01-303-0686