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 6150-00-419-0505
NSN 5930-00-255-4173
NSN 6645-01-272-6987
NSN 5999-00-786-9623
NSN 5985-01-524-0525
NSN 6650-01-505-6431
NSN 5945-00-952-6072
NSN 5935-01-571-1470
NSN 5915-00-776-6496
NSN 6650-01-449-0702
NSN 6220-00-541-8515
NSN 4140-01-514-7379