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 6620-00-212-6921
NSN 5945-00-900-2863
NSN 6620-00-483-1961
NSN 6650-00-565-1659
NSN 6130-01-203-5704
NSN 5965-01-508-2537
NSN 5965-00-267-4173
NSN 5975-01-160-0481
NSN 4140-00-880-5140
NSN 6105-01-562-6054
NSN 5915-00-886-5474
NSN 5920-00-480-4063