A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5910-01-487-8330
NSN 5835-01-625-8604
NSN 5915-01-392-3168
NSN 6145-00-628-7088
NSN 5950-00-771-5948
NSN 5985-01-368-7044
NSN 6135-00-497-0491
NSN 5905-00-318-4973
NSN 5925-00-181-9785
NSN 5905-01-068-3379
NSN 5895-01-497-8024
NSN 5998-01-248-7562