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 5975-01-467-7845
NSN 6240-01-313-5355
NSN 5945-01-508-9384
NSN 6610-01-476-7412
NSN 5835-00-632-8621
NSN 5855-01-225-5855
NSN 5855-01-541-8032
NSN 6320-00-521-9350
NSN 6645-01-583-8153
NSN 6220-00-633-8081
NSN 5999-01-391-8111
NSN 4140-00-945-3833