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 6150-01-390-0011
NSN 6240-01-196-6985
NSN 5990-01-203-6089
NSN 5835-01-606-8768
NSN 6650-00-776-7200
NSN 6620-01-189-8153
NSN 6135-01-252-0315
NSN 5895-00-330-5742
NSN 5925-00-336-1992
NSN 5910-00-779-9823
NSN 6135-01-424-1114
NSN 5935-01-295-9025