A cylindrically-shaped headed item, having circular or longitudinal groove(s).
NSN 6150-01-423-2545
NSN 5950-01-250-0167
NSN 6135-01-355-8917
NSN 6610-01-105-0399
NSN 5950-00-577-6986
NSN 5905-01-026-9636
NSN 6320-01-313-8306
NSN 6320-00-593-0379
NSN 5925-01-164-5148
NSN 5985-01-259-5214
NSN 5835-00-601-1402
NSN 6110-01-289-4689