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 5998-01-080-6012
NSN 6130-01-411-5929
NSN 5935-01-162-3149
NSN 5920-01-129-5886
NSN 5855-01-546-0337
NSN 4140-01-152-6600
NSN 5905-01-437-8811
NSN 5990-00-927-3127
NSN 5950-01-545-8396
NSN 6145-01-568-9199
NSN 5996-01-310-2986
NSN 5945-01-185-3020