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 5999-00-266-3805
NSN 6320-00-564-2772
NSN 5930-01-467-7774
NSN 5975-01-549-6316
NSN 5998-01-448-7119
NSN 5998-00-125-8765
NSN 5935-00-892-3059
NSN 6130-00-822-4903
NSN 6645-01-188-0213
NSN 6685-01-188-0302
NSN 5985-00-952-1025
NSN 5999-00-209-2578