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 4140-01-492-7215
NSN 5985-01-022-9181
NSN 6130-01-378-1079
NSN 5910-00-456-0824
NSN 6150-00-003-2233
NSN 6110-00-448-2588
NSN 6240-01-595-0274
NSN 5855-01-031-4729
NSN 6105-01-103-0205
NSN 5930-01-367-1258
NSN 6650-01-064-4975
NSN 6130-00-186-0737