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 6650-01-135-3127
NSN 5990-01-499-6930
NSN 6220-00-676-0904
NSN 5990-00-081-5370
NSN 5895-01-242-5201
NSN 5945-01-025-8745
NSN 5915-00-553-8755
NSN 5945-01-024-9378
NSN 2925-00-617-0826
NSN 5895-00-456-2667
NSN 5950-00-497-2896
NSN 6320-01-103-6218