A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6145-01-105-5335
NSN 6240-01-381-1072
NSN 5985-01-505-2919
NSN 6240-01-329-2453
NSN 7035-01-471-1606
NSN 6110-01-480-6316
NSN 5960-01-076-9930
NSN 5895-00-466-1676
NSN 6650-01-158-5099
NSN 6145-00-159-7743
NSN 5998-01-416-6050
NSN 2925-01-440-9912