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 5975-00-233-6301
NSN 6620-01-169-6699
NSN 6145-01-281-5661
NSN 2925-00-881-0164
NSN 4140-01-142-2971
NSN 5999-01-016-6949
NSN 5945-00-336-8119
NSN 6620-01-436-5661
NSN 4140-01-085-3995
NSN 5935-00-362-2298
NSN 5910-00-675-4503
NSN 5915-01-517-0374