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 6645-01-315-0720
NSN 5945-01-319-6104
NSN 6135-00-235-1938
NSN 2925-00-221-4977
NSN 6135-01-142-2417
NSN 5935-01-398-3550
NSN 5999-01-369-5671
NSN 5990-00-242-3754
NSN 6220-01-524-9142
NSN 5905-00-827-9618
NSN 6110-00-480-7868
NSN 5905-00-153-7650