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 6240-01-160-7934
NSN 6150-01-326-1227
NSN 5960-01-577-5682
NSN 5915-00-276-8332
NSN 6105-00-846-1793
NSN 6145-00-010-5135
NSN 5999-00-785-9274
NSN 5999-00-596-1930
NSN 5975-00-835-0393
NSN 6650-01-513-2644
NSN 6240-01-519-5893
NSN 4140-01-155-5620