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 5945-01-246-5466
NSN 5930-01-278-2652
NSN 2925-00-242-7688
NSN 7035-01-487-6481
NSN 6240-00-950-7478
NSN 6130-01-584-2393
NSN 5920-01-472-3583
NSN 5975-00-101-0284
NSN 5935-01-383-2045
NSN 6240-01-415-5149
NSN 6240-01-226-6484
NSN 6685-01-062-2151