A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6645-01-284-6533
NSN 5835-01-149-6855
NSN 5835-01-299-5055
NSN 5920-01-105-4506
NSN 5895-01-027-0308
NSN 5945-01-259-2025
NSN 6110-01-247-4192
NSN 6130-01-646-3916
NSN 5990-00-829-2588
NSN 6130-01-203-7526
NSN 5915-01-259-5705
NSN 5920-00-296-9869