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 5910-01-483-7816
NSN 6130-01-415-6547
NSN 6105-00-153-7967
NSN 5930-01-171-0905
NSN 5930-00-456-6698
NSN 5930-01-374-7311
NSN 5965-01-381-2527
NSN 5999-00-664-1818
NSN 5960-00-248-3094
NSN 5925-01-111-4509
NSN 6650-01-602-5070
NSN 5999-01-125-4879