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 6650-00-809-1817
NSN 6150-01-600-0536
NSN 7035-00-483-8630
NSN 6145-00-466-4068
NSN 6145-01-063-8058
NSN 4140-00-067-7460
NSN 4140-00-921-3814
NSN 6220-00-187-8569
NSN 5835-01-232-4035
NSN 5960-00-494-4764
NSN 5930-01-163-7282
NSN 4140-01-397-8445