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 6110-01-132-0163
NSN 5925-01-339-0955
NSN 5895-01-362-4245
NSN 5855-00-586-6255
NSN 6240-00-905-8789
NSN 6320-00-925-0558
NSN 6145-00-481-8737
NSN 5855-01-157-5505
NSN 5945-01-386-9615
NSN 6135-01-526-6530
NSN 5975-01-589-7069
NSN 6130-01-457-2293