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 5985-01-573-7547
NSN 2925-01-411-4666
NSN 6110-00-912-6575
NSN 6650-01-526-1710
NSN 5935-01-491-2615
NSN 6685-00-871-3656
NSN 5985-00-999-0576
NSN 6150-01-588-9933
NSN 4140-01-168-7685
NSN 5835-01-062-2235
NSN 5920-01-634-0250
NSN 5935-00-025-8025