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 5895-00-418-4639
NSN 6685-01-360-7367
NSN 5996-00-278-5193
NSN 6240-00-248-4281
NSN 6145-01-610-4742
NSN 5965-01-130-1965
NSN 5965-01-495-1170
NSN 4140-00-635-9195
NSN 5935-01-579-3598
NSN 5835-01-084-6997
NSN 6105-01-213-0142
NSN 6145-00-173-5177