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 5895-01-174-3355
NSN 5960-01-599-9821
NSN 6130-00-991-9535
NSN 6320-00-089-9425
NSN 6220-00-039-6348
NSN 6150-01-516-4119
NSN 6220-01-197-0314
NSN 5998-00-413-3048
NSN 6145-01-092-5604
NSN 5985-01-167-0966
NSN 5930-00-020-5823
NSN 5920-01-610-7598