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 5960-01-533-2115
NSN 4140-00-443-9732
NSN 5935-01-425-5802
NSN 5905-01-468-6838
NSN 5965-01-171-9796
NSN 5990-00-469-7654
NSN 5975-01-288-3099
NSN 5915-00-263-2175
NSN 6645-01-633-1852
NSN 6645-01-088-5244
NSN 5985-00-137-4328
NSN 5910-00-341-2827