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 5915-00-011-8348
NSN 5905-01-472-2366
NSN 6240-01-657-8471
NSN 5990-00-226-1152
NSN 6610-00-570-0304
NSN 5996-01-278-2909
NSN 5905-01-468-0284
NSN 5998-01-003-6555
NSN 6130-01-469-2973
NSN 6145-01-079-1475
NSN 6135-01-100-3593
NSN 6110-00-137-2348