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 5915-01-633-5058
NSN 5930-00-406-9902
NSN 5965-01-468-6186
NSN 4140-00-385-2925
NSN 6135-01-633-2066
NSN 4140-00-814-2505
NSN 5975-01-219-9663
NSN 5998-01-355-9651
NSN 5835-01-191-3405
NSN 6150-01-284-3116
NSN 6320-00-731-6134
NSN 5945-01-421-1808