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 7035-01-598-5676
NSN 6240-01-557-9038
NSN 6105-01-095-8954
NSN 6650-01-481-8009
NSN 5999-00-754-6113
NSN 5975-00-457-0611
NSN 5895-00-222-8555
NSN 5999-01-624-8288
NSN 6610-01-102-2256
NSN 6650-00-334-5901
NSN 6650-01-211-5628
NSN 2925-01-633-4048