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 5998-01-265-0348
NSN 5990-01-517-7848
NSN 4140-01-579-3686
NSN 6145-01-142-2234
NSN 6135-01-185-3614
NSN 5835-01-310-3846
NSN 6240-01-050-5755
NSN 5996-00-327-2163
NSN 5985-01-339-8662
NSN 6650-01-163-6330
NSN 5835-01-192-4165
NSN 5920-01-246-4330