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 5960-01-512-0233
NSN 5895-01-260-2737
NSN 5960-01-544-1273
NSN 6610-00-357-2937
NSN 5990-01-212-2037
NSN 5960-01-622-0393
NSN 5915-00-727-0388
NSN 5950-01-097-4071
NSN 5905-00-549-4187
NSN 2925-00-964-7128
NSN 5975-01-196-5842
NSN 6620-01-223-9025