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 6240-00-440-3656
NSN 5910-01-520-6899
NSN 5920-00-148-8176
NSN 2925-00-441-7547
NSN 6130-01-397-1366
NSN 6220-01-331-0889
NSN 5999-01-634-0576
NSN 6650-00-092-8244
NSN 6650-01-049-5361
NSN 5998-01-423-2402
NSN 6240-00-222-0276
NSN 6130-01-304-8411