A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5855-00-797-8217
NSN 6145-01-627-8517
NSN 6650-01-586-9997
NSN 5960-01-347-6791
NSN 5925-00-617-2994
NSN 6105-01-030-0117
NSN 5915-00-107-2576
NSN 5935-00-551-8628
NSN 6650-01-014-5990
NSN 6650-01-336-5859
NSN 5945-00-937-9181
NSN 2925-01-113-6904