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 5998-01-159-9319
NSN 5835-01-056-9303
NSN 6620-01-239-7671
NSN 5985-01-064-3698
NSN 6320-01-015-9856
NSN 5855-01-330-1918
NSN 5960-01-609-6565
NSN 5855-00-631-4565
NSN 6620-01-549-6653
NSN 6150-01-659-3987
NSN 5905-01-069-3419
NSN 6130-00-351-4296