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 6610-01-322-1394
NSN 6110-01-550-6637
NSN 4140-01-084-9429
NSN 5960-01-227-5245
NSN 5975-00-197-2048
NSN 5985-01-429-0220
NSN 2925-00-105-3907
NSN 6135-01-426-8282
NSN 5960-00-074-8968
NSN 6650-00-774-7078
NSN 5835-00-366-0240
NSN 6220-01-605-0832