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 6320-01-207-9038
NSN 6650-01-311-1593
NSN 6320-00-925-0558
NSN 6130-01-444-1788
NSN 6320-01-119-3935
NSN 5935-01-133-5590
NSN 5975-01-062-1435
NSN 5905-01-607-0534
NSN 5990-00-345-7128
NSN 5905-01-435-6204
NSN 5905-01-146-4076
NSN 7035-01-027-2259