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 5985-01-142-1773
NSN 6650-01-268-5771
NSN 6220-00-224-3036
NSN 6110-01-246-4642
NSN 5985-00-703-0999
NSN 5998-01-181-2478
NSN 5910-01-276-1127
NSN 6610-00-724-0438
NSN 5950-01-414-8389
NSN 5965-01-111-6031
NSN 6150-00-225-3337
NSN 5996-00-794-2546