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 5925-00-489-1537
NSN 2925-01-467-1192
NSN 6105-00-196-4957
NSN 6685-01-029-3773
NSN 5996-01-270-5095
NSN 5998-01-380-2110
NSN 5895-01-167-6236
NSN 6110-01-080-6198
NSN 5905-01-318-1674
NSN 5855-01-394-7125
NSN 5855-01-103-1474
NSN 5935-00-263-0213