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 6220-01-356-3091
NSN 6610-01-483-1317
NSN 6240-00-893-4799
NSN 2925-01-121-3355
NSN 5910-00-362-6687
NSN 5945-01-212-2691
NSN 4140-01-501-5631
NSN 6130-00-554-3691
NSN 5905-00-580-1748
NSN 6220-01-141-8200
NSN 5935-01-199-2826
NSN 5998-00-081-9929