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 5990-01-069-4604
NSN 6135-01-290-6487
NSN 6620-01-298-3806
NSN 6650-00-166-7160
NSN 5990-01-548-5979
NSN 5999-01-190-6626
NSN 6220-00-117-4547
NSN 6130-01-578-6832
NSN 5895-00-676-6993
NSN 6240-01-238-4117
NSN 5985-01-573-1112
NSN 6130-00-890-0553