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 5999-01-475-1610
NSN 6645-01-288-5973
NSN 6610-01-375-1527
NSN 6110-01-087-9071
NSN 5895-00-243-1959
NSN 6610-01-038-6780
NSN 5950-01-143-3050
NSN 5835-00-092-1136
NSN 6650-01-633-9147
NSN 4140-01-376-8510
NSN 6150-00-305-1869
NSN 6645-01-068-3042