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 5960-01-641-5493
NSN 6650-01-433-8101
NSN 4140-01-028-2743
NSN 5920-01-581-0015
NSN 6130-01-590-6401
NSN 6610-01-305-7927
NSN 5990-01-097-4721
NSN 6685-00-938-3984
NSN 6645-01-042-0467
NSN 5930-01-054-3868
NSN 6150-00-012-4912
NSN 5915-01-422-7431