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 6110-01-437-4974
NSN 5935-01-194-9933
NSN 5996-01-487-4377
NSN 4140-00-113-1279
NSN 6610-00-462-9843
NSN 6240-01-490-1818
NSN 5985-01-463-3187
NSN 6240-01-291-1191
NSN 5960-01-481-3722
NSN 5965-01-565-8240
NSN 6150-00-290-8125
NSN 5960-01-022-4895