A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5960-01-194-4506
NSN 7035-00-360-2008
NSN 5910-01-434-6299
NSN 5945-01-615-2924
NSN 5835-01-227-2318
NSN 5950-01-280-0560
NSN 6130-01-457-2293
NSN 5999-01-546-5257
NSN 5925-01-464-2734
NSN 5920-00-317-2219
NSN 6135-01-400-2947
NSN 5975-01-492-2774