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 6320-01-491-0327
NSN 5925-00-456-0651
NSN 6130-00-137-6390
NSN 4140-01-423-1005
NSN 5985-01-587-1317
NSN 5835-01-168-6256
NSN 5990-00-170-4239
NSN 6610-00-239-8613
NSN 5835-01-158-6878
NSN 6685-00-540-8929
NSN 5985-01-323-7236
NSN 5965-01-017-8741