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 5996-00-431-6077
NSN 6150-01-173-0177
NSN 5996-01-519-1293
NSN 5930-00-650-1817
NSN 5945-01-303-6361
NSN 5920-00-407-7652
NSN 6685-01-317-4839
NSN 6135-01-602-8383
NSN 6685-00-974-2596
NSN 6220-00-737-0869
NSN 5855-00-763-2155
NSN 5950-01-280-2723