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 2925-01-335-4549
NSN 7035-01-642-0320
NSN 6145-00-117-8861
NSN 6220-01-104-1447
NSN 5855-01-076-5202
NSN 6145-01-572-7587
NSN 6240-01-105-1399
NSN 7035-01-486-4118
NSN 5999-00-734-1105
NSN 5835-00-358-4235
NSN 6150-01-643-5563
NSN 6105-01-014-1962