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 5990-01-131-2008
NSN 6105-00-068-3494
NSN 6220-01-476-7939
NSN 6320-01-255-2096
NSN 5950-01-543-9640
NSN 6150-00-350-9180
NSN 6610-01-209-4663
NSN 5975-01-501-5244
NSN 5920-00-578-9334
NSN 5950-00-717-9273
NSN 6645-01-329-9591
NSN 5996-00-156-5967