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 6620-01-074-1364
NSN 5985-00-633-9963
NSN 5965-01-578-6911
NSN 5985-00-513-0527
NSN 6150-01-386-3844
NSN 5975-01-186-4268
NSN 2925-00-679-8131
NSN 5925-01-608-1522
NSN 5895-00-539-8322
NSN 6220-01-408-9129
NSN 4140-01-261-4741
NSN 5930-01-455-7700