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 5999-00-466-3226
NSN 5950-01-364-0800
NSN 6110-01-266-4514
NSN 5905-00-484-3383
NSN 6240-01-029-5032
NSN 5950-00-421-6261
NSN 6145-01-568-9199
NSN 6145-00-838-0655
NSN 5950-00-215-8586
NSN 5998-01-400-0938
NSN 6320-01-384-3850
NSN 5835-00-289-9080