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 5905-01-535-7145
NSN 5998-01-602-5811
NSN 6320-00-174-1362
NSN 6130-00-118-8952
NSN 5950-01-567-5967
NSN 6645-01-607-4078
NSN 5920-01-069-0270
NSN 5910-00-482-0656
NSN 6620-01-593-0817
NSN 6145-00-926-3456
NSN 5990-00-492-5063
NSN 6610-01-327-3187