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 6645-00-052-7288
NSN 5920-00-549-2203
NSN 5855-00-149-0766
NSN 5998-00-161-6288
NSN 6610-01-187-1748
NSN 5996-01-599-6961
NSN 4140-01-247-4837
NSN 5895-00-404-9636
NSN 6105-00-781-5047
NSN 4140-00-205-0853
NSN 6240-00-717-0844
NSN 6645-01-590-9405