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 5910-00-441-9578
NSN 5855-01-147-4785
NSN 6240-01-519-5893
NSN 6130-00-018-8621
NSN 7035-01-642-0320
NSN 6610-01-478-4392
NSN 5996-01-295-7854
NSN 5975-01-398-1456
NSN 6105-01-188-0390
NSN 5960-01-130-6413
NSN 5998-01-480-0007
NSN 5920-00-432-7643