A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5915-01-628-8364
NSN 5999-01-337-7162
NSN 2925-00-149-0760
NSN 5935-00-854-5516
NSN 2925-01-085-0691
NSN 5985-00-111-6056
NSN 5999-00-228-6498
NSN 5935-00-951-9881
NSN 5990-00-788-3829
NSN 5855-01-023-3727
NSN 5920-01-268-2188
NSN 6105-01-254-1793