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 5925-00-142-0752
NSN 6610-00-925-5064
NSN 5996-00-949-7046
NSN 5965-01-422-0344
NSN 6650-00-629-8027
NSN 5975-00-529-3835
NSN 4140-00-880-6918
NSN 6685-00-925-2287
NSN 6135-00-906-0984
NSN 4140-01-650-1208
NSN 5905-01-069-3419
NSN 5999-01-374-8659