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 6620-01-628-2620
NSN 5975-01-330-0665
NSN 5975-00-816-9621
NSN 5985-00-338-2915
NSN 5935-01-571-8756
NSN 5925-01-054-4226
NSN 6620-01-270-8364
NSN 5905-01-235-5091
NSN 5855-01-615-7672
NSN 6320-01-624-0193
NSN 5960-00-007-9375
NSN 5950-00-811-4810