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 6320-01-148-8125
NSN 5935-00-845-6016
NSN 5855-00-466-2309
NSN 5930-01-406-4281
NSN 6685-01-128-3052
NSN 4140-00-466-9268
NSN 6130-01-406-4769
NSN 5985-01-338-8386
NSN 6105-01-654-1000
NSN 6620-00-227-6776
NSN 5935-01-344-3228
NSN 5975-01-329-9325