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 5960-00-806-0292
NSN 6650-00-695-0304
NSN 6105-01-073-5340
NSN 5915-00-358-2407
NSN 4140-01-337-7695
NSN 6620-01-115-2926
NSN 6645-00-888-5820
NSN 2925-00-643-4243
NSN 5915-00-704-1609
NSN 2925-01-247-8058
NSN 5985-01-591-6310
NSN 6685-01-017-4488