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 5985-01-424-0768
NSN 6320-00-115-0883
NSN 5998-00-231-6130
NSN 6110-00-121-0975
NSN 5999-00-186-9314
NSN 5975-01-438-0428
NSN 2925-01-004-5627
NSN 5996-01-486-2045
NSN 6220-01-164-5228
NSN 5930-00-246-9757
NSN 5910-00-524-6717
NSN 5835-01-416-6455