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 5990-01-254-3197
NSN 6105-00-713-7333
NSN 6685-01-417-5019
NSN 6650-01-141-5999
NSN 6240-00-531-3187
NSN 7035-01-496-0855
NSN 6685-01-556-3449
NSN 6220-00-905-1488
NSN 6135-01-054-2462
NSN 5855-00-494-9581
NSN 5996-01-241-3156
NSN 5835-01-535-0948