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 6610-01-412-0058
NSN 6650-01-423-9772
NSN 6130-01-504-3946
NSN 5930-01-553-4839
NSN 5895-01-359-4279
NSN 5935-01-479-7786
NSN 6645-01-434-9993
NSN 5999-00-436-2749
NSN 5998-01-449-0099
NSN 5985-00-529-0093
NSN 5835-01-295-2431
NSN 5975-00-451-8588