A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5965-01-222-8894
NSN 5965-00-997-5764
NSN 6105-00-462-9723
NSN 5930-01-442-3528
NSN 5930-01-441-9400
NSN 6135-01-087-7895
NSN 5895-01-244-0402
NSN 6135-00-982-1882
NSN 5950-00-243-4391
NSN 5960-01-289-5272
NSN 6610-01-014-3964
NSN 6240-00-141-6143