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 7035-01-575-1026
NSN 5945-01-353-0362
NSN 5935-01-390-1591
NSN 2925-00-890-3240
NSN 6110-01-384-2091
NSN 6650-00-349-8732
NSN 6130-01-411-7452
NSN 5975-01-514-8114
NSN 5965-01-605-0090
NSN 5965-00-772-8024
NSN 5985-01-421-5029
NSN 5925-00-615-7071