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 6220-00-295-3594
NSN 5985-01-248-9253
NSN 6240-01-344-7134
NSN 6320-01-495-1244
NSN 5975-01-425-2779
NSN 6150-01-312-9462
NSN 6650-00-597-7313
NSN 5920-01-110-3177
NSN 6130-01-301-1783
NSN 5985-01-230-6690
NSN 6135-01-495-0933
NSN 6130-01-286-9580