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 4140-01-420-7269
NSN 5915-01-598-4442
NSN 5835-00-830-6416
NSN 5915-00-003-0351
NSN 6220-00-764-6099
NSN 5910-00-538-7982
NSN 5920-00-579-8434
NSN 6130-01-164-2228
NSN 2925-01-306-4228
NSN 6145-01-102-1940
NSN 5835-00-957-3565
NSN 6110-01-084-2378