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 6135-00-152-8729
NSN 5990-01-414-7618
NSN 5999-01-420-5967
NSN 5855-01-482-8290
NSN 6145-01-452-1254
NSN 6645-00-664-4665
NSN 6105-00-394-6803
NSN 5996-00-100-1238
NSN 5960-01-580-6360
NSN 5945-01-456-9136
NSN 5950-00-003-8228
NSN 5855-00-165-3093