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 5945-01-417-2146
NSN 6150-00-826-1351
NSN 5950-01-353-4146
NSN 5996-00-173-9652
NSN 5895-01-409-2949
NSN 5960-01-503-0362
NSN 6220-01-231-4552
NSN 5950-01-361-8863
NSN 5905-01-260-8526
NSN 6650-00-349-8732
NSN 6105-00-373-3780
NSN 5835-00-905-7165