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 5965-01-540-0743
NSN 6240-00-123-4112
NSN 5905-01-411-4775
NSN 6240-01-631-0767
NSN 5960-01-142-1995
NSN 6240-00-832-6867
NSN 4140-01-536-3932
NSN 6105-01-323-4695
NSN 5950-00-323-1680
NSN 5905-01-322-4901
NSN 5935-01-169-3584
NSN 6645-00-851-6654