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 6610-00-825-5774
NSN 5990-00-467-7431
NSN 6610-00-100-1195
NSN 6685-01-489-7034
NSN 5930-00-924-5299
NSN 5998-01-140-9901
NSN 5895-00-480-3254
NSN 5965-01-399-8454
NSN 5895-01-294-4740
NSN 4140-00-218-3579
NSN 6150-01-124-8039
NSN 6320-01-388-1067