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 6130-01-446-7404
NSN 5915-00-134-2974
NSN 6240-00-945-6120
NSN 5990-01-052-9343
NSN 5905-01-264-7456
NSN 5985-00-406-6311
NSN 5905-00-583-9928
NSN 6610-01-336-8027
NSN 5835-00-518-4507
NSN 6130-00-716-4658
NSN 6130-01-388-9961
NSN 6135-00-933-4293