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 6135-01-462-0731
NSN 5999-01-031-9501
NSN 6110-01-620-9007
NSN 5999-01-409-2834
NSN 5999-00-914-3949
NSN 6150-01-382-7232
NSN 5920-00-254-4844
NSN 5945-01-510-4686
NSN 5935-00-560-3214
NSN 6135-01-534-3007
NSN 5895-01-582-6148
NSN 6110-00-451-1462