A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5915-01-024-4704
NSN 7035-01-473-0517
NSN 5835-01-045-6371
NSN 7035-01-529-4603
NSN 5985-01-292-9158
NSN 5945-01-226-3206
NSN 5930-00-079-0452
NSN 5950-01-309-1347
NSN 6620-00-925-8435
NSN 5999-01-415-5090
NSN 6220-01-092-5177
NSN 5895-00-995-4631