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 5915-01-462-0432
NSN 6620-00-500-0041
NSN 5960-00-355-4017
NSN 5855-00-298-0261
NSN 6220-00-515-6998
NSN 6105-01-327-9407
NSN 6145-00-593-8100
NSN 5895-01-061-5064
NSN 5935-00-462-6816
NSN 5990-01-565-2226
NSN 5915-00-642-9997
NSN 6320-01-232-4664