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 7035-01-432-2424
NSN 6135-01-301-8776
NSN 6110-00-886-0540
NSN 5895-00-149-0707
NSN 5910-00-351-2944
NSN 6320-00-790-4844
NSN 5930-00-233-6916
NSN 6610-01-421-0732
NSN 5945-01-235-1161
NSN 5998-01-292-5933
NSN 5920-00-482-0896
NSN 5835-00-861-6066