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 6685-00-634-9964
NSN 5925-01-659-1483
NSN 6145-01-098-0125
NSN 5998-00-222-4439
NSN 5920-00-776-0633
NSN 6650-01-374-4923
NSN 5960-00-565-0101
NSN 5935-00-612-5748
NSN 5975-01-182-5806
NSN 4140-01-364-9797
NSN 5945-01-353-2460
NSN 5835-00-275-0584