A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 5985-01-163-3644
NSN 6650-00-253-4783
NSN 5990-00-578-8850
NSN 6105-01-506-0881
NSN 5835-01-576-9013
NSN 6135-00-862-5736
NSN 5960-01-558-7787
NSN 5960-01-487-6436
NSN 5990-00-276-8650
NSN 6110-01-621-1605
NSN 5895-00-957-8029
NSN 5965-01-566-0876