A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5975-00-022-9562
NSN 5855-00-228-8446
NSN 5855-01-103-8650
NSN 6135-01-459-6424
NSN 5935-00-350-2028
NSN 6105-01-462-7337
NSN 5895-01-425-2718
NSN 5930-01-342-7676
NSN 2925-00-196-9003
NSN 5990-01-493-4039
NSN 6145-00-553-8196
NSN 5930-01-290-3886