A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5960-01-170-9886
NSN 6645-00-038-7562
NSN 5915-00-009-3022
NSN 6105-01-514-7245
NSN 5910-01-101-7545
NSN 6220-00-741-6344
NSN 5920-00-881-6584
NSN 6105-01-471-8085
NSN 6645-01-258-6928
NSN 5915-01-237-2480
NSN 5945-01-435-5874
NSN 5905-00-269-5452