A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5910-00-894-1683
NSN 6105-01-409-2023
NSN 5935-00-665-7968
NSN 6650-00-782-4624
NSN 6240-01-359-7230
NSN 6135-00-351-8606
NSN 5895-01-445-6561
NSN 5855-00-484-4856
NSN 6135-00-276-7625
NSN 5915-00-063-3689
NSN 6650-01-555-8819
NSN 6105-00-833-6753