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 5990-01-017-5117
NSN 5925-01-202-0980
NSN 4140-00-555-3856
NSN 6645-01-193-5214
NSN 6620-01-469-6826
NSN 6610-01-433-2219
NSN 6150-01-442-7622
NSN 6150-01-074-2577
NSN 5990-00-756-6059
NSN 6320-00-261-9136
NSN 5965-01-543-4934
NSN 6650-01-408-0422