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 6645-01-400-2119
NSN 5910-01-138-6313
NSN 5990-01-241-2479
NSN 6145-00-567-7413
NSN 5950-01-280-2723
NSN 5835-00-707-6266
NSN 5910-01-054-5465
NSN 6320-00-925-0558
NSN 5990-01-485-0260
NSN 5905-01-183-6968
NSN 6240-00-902-0936
NSN 5915-00-229-1474