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 6320-01-072-2073
NSN 6650-01-068-3997
NSN 5930-01-047-3985
NSN 5930-00-146-2453
NSN 5910-00-718-1473
NSN 6320-00-456-0836
NSN 6620-00-631-4599
NSN 5950-00-278-4186
NSN 6110-01-100-4445
NSN 6650-00-348-2453
NSN 5895-01-231-9519
NSN 5985-01-139-4144