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 6150-00-983-3176
NSN 5998-00-229-3756
NSN 6320-01-249-3236
NSN 6610-00-553-5103
NSN 6220-01-230-5753
NSN 5855-00-925-0114
NSN 5985-01-375-3981
NSN 5935-01-286-4323
NSN 6650-00-932-2048
NSN 7035-01-341-4310
NSN 5895-01-014-3143
NSN 6650-01-629-6469