A trunicated cone-shaped metal item generally tapered along its entire peripheral length, with a centrally located hole. It may be split (cut) through the material parallel to the axis.
NSN 6320-00-270-8222
NSN 5895-01-471-5569
NSN 5960-00-050-0442
NSN 6240-00-243-0340
NSN 5965-01-123-3770
NSN 6130-01-519-5565
NSN 5935-01-016-0531
NSN 6320-01-266-7607
NSN 5996-01-318-3163
NSN 2925-00-555-8836
NSN 5985-01-021-9578
NSN 6320-00-149-7570