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 6110-01-376-3361
NSN 5990-01-100-1840
NSN 5935-01-102-1720
NSN 6685-01-144-9004
NSN 6150-01-461-3549
NSN 5835-01-012-7667
NSN 5945-01-545-8594
NSN 6650-01-083-0518
NSN 5985-00-724-4897
NSN 5950-00-126-9697
NSN 5910-01-303-4058
NSN 6110-01-274-5830