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 5855-01-247-9666
NSN 6110-00-135-9475
NSN 5920-01-607-0771
NSN 6620-01-514-7786
NSN 4140-00-538-1226
NSN 6150-00-518-1402
NSN 5935-01-318-8799
NSN 6110-00-768-7583
NSN 5985-01-369-9126
NSN 5920-00-519-9722
NSN 5920-00-422-0665
NSN 5999-00-590-5184