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 6220-00-471-8995
NSN 6135-01-366-9633
NSN 6685-01-130-3471
NSN 5975-00-833-2398
NSN 5975-00-255-2441
NSN 5999-01-505-0074
NSN 5910-00-484-8583
NSN 6320-01-592-6248
NSN 4140-00-988-5427
NSN 6645-00-838-6939
NSN 5895-01-089-8171
NSN 5998-00-182-7932