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 5905-01-331-3103
NSN 6105-01-401-5361
NSN 5915-01-282-6921
NSN 5975-01-568-6756
NSN 5950-00-466-0882
NSN 5975-01-365-2180
NSN 5935-01-131-2290
NSN 5945-00-857-4463
NSN 5950-00-375-6285
NSN 6610-01-468-3025
NSN 5835-01-123-8305
NSN 6105-01-595-5868