A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5835-01-286-6499
NSN 6685-01-226-8141
NSN 5905-00-845-5658
NSN 6685-01-374-2529
NSN 6620-01-288-2627
NSN 6145-01-170-4658
NSN 5930-01-395-9111
NSN 5935-01-276-3025
NSN 5990-01-563-1554
NSN 5950-00-449-8505
NSN 5985-01-348-4599
NSN 6220-01-054-2804