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 6620-00-273-8735
NSN 6105-01-451-4327
NSN 6620-01-401-5356
NSN 5965-00-227-7348
NSN 5999-01-384-5031
NSN 5998-01-525-4500
NSN 5996-01-586-9111
NSN 5950-01-451-2617
NSN 4140-01-529-6693
NSN 6135-01-435-6503
NSN 5920-01-426-8517
NSN 5999-01-138-2622