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 5999-00-965-6580
NSN 5945-01-270-2197
NSN 5950-01-401-5321
NSN 5998-01-283-3788
NSN 6320-01-576-6310
NSN 6320-00-578-6898
NSN 6110-01-556-3659
NSN 6650-00-184-1581
NSN 5905-00-391-2377
NSN 4140-01-235-8252
NSN 6110-01-227-2617
NSN 5925-01-208-7687