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 6320-01-380-7372
NSN 6150-01-420-1740
NSN 6145-01-026-5519
NSN 7035-01-364-0286
NSN 5915-01-422-0564
NSN 5905-00-553-2023
NSN 5855-00-631-4565
NSN 6240-01-306-0525
NSN 6105-01-147-5586
NSN 5985-01-074-2571
NSN 6240-01-054-2289
NSN 4140-00-132-2061