A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5965-00-905-6895
NSN 6650-00-283-0978
NSN 5999-01-344-3843
NSN 6645-01-238-2718
NSN 5985-01-539-0245
NSN 5910-00-408-5547
NSN 5935-01-343-2210
NSN 5999-01-081-3560
NSN 6620-00-410-2638
NSN 5998-01-420-2742
NSN 6320-01-476-0686
NSN 5925-01-233-9786