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 7035-01-330-6768
NSN 5895-01-101-1442
NSN 6110-00-782-1174
NSN 4140-00-226-9807
NSN 6145-01-486-3666
NSN 7035-00-365-3989
NSN 5905-01-415-8796
NSN 5905-01-505-0699
NSN 6220-01-396-7326
NSN 5935-01-634-0668
NSN 5985-01-463-7225
NSN 6645-01-242-4826