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 5835-01-485-0210
NSN 5965-01-050-8447
NSN 4140-00-399-0972
NSN 5945-01-462-0703
NSN 5895-01-503-0661
NSN 6610-01-038-6780
NSN 6145-00-252-5290
NSN 4140-01-204-2907
NSN 6685-01-237-2562
NSN 6105-01-386-1529
NSN 6145-01-607-6165
NSN 4140-00-420-0251