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 5935-00-287-5069
NSN 6645-00-664-4665
NSN 6220-01-480-9536
NSN 6610-01-364-0197
NSN 6650-01-608-2240
NSN 5920-01-492-5788
NSN 2925-01-318-8853
NSN 6110-01-425-1449
NSN 5935-00-982-6437
NSN 5960-00-529-0583
NSN 2925-00-964-7128
NSN 5905-01-042-8808