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 6620-01-097-1038
NSN 5950-01-196-5178
NSN 6130-00-081-2186
NSN 6240-01-442-7746
NSN 6220-00-308-3487
NSN 2925-01-448-2880
NSN 6620-01-290-2973
NSN 6130-01-308-3040
NSN 5920-01-386-3115
NSN 5998-00-767-0307
NSN 6650-00-937-5319
NSN 5998-01-581-0693