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 5945-01-533-0948
NSN 6610-00-123-4314
NSN 5855-00-189-6066
NSN 6220-00-716-3939
NSN 6620-01-519-2628
NSN 5835-01-362-0305
NSN 5998-01-578-9971
NSN 5960-00-111-0457
NSN 5905-01-642-3835
NSN 6130-01-379-0418
NSN 4140-00-300-8111
NSN 5895-00-679-8606