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 6685-01-064-3220
NSN 5925-00-186-8669
NSN 6645-01-245-8390
NSN 5835-00-253-3453
NSN 5965-00-222-7394
NSN 5945-01-428-1677
NSN 6240-01-444-2227
NSN 5920-00-144-8031
NSN 5910-01-181-5677
NSN 5935-00-945-0001
NSN 6150-01-152-2413
NSN 2925-00-459-4519