A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5945-00-363-9481
NSN 6220-01-468-1969
NSN 7035-01-513-9502
NSN 6105-01-386-6572
NSN 5965-00-665-2156
NSN 5960-00-942-0934
NSN 5855-01-147-4785
NSN 5905-00-844-5377
NSN 6135-00-497-0491
NSN 5945-00-957-4944
NSN 5835-00-139-8676
NSN 5895-01-035-0450