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 5945-01-559-0429
NSN 5925-01-524-0448
NSN 5999-01-020-7641
NSN 5910-01-271-0920
NSN 5965-01-326-9860
NSN 5960-00-652-5921
NSN 6110-01-167-4837
NSN 6610-01-250-7477
NSN 5915-00-470-0586
NSN 5975-01-045-3059
NSN 5915-00-661-2223
NSN 4140-00-142-2491