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 5965-00-788-5466
NSN 6110-01-566-4821
NSN 6130-00-862-5516
NSN 5925-01-332-2865
NSN 6130-01-065-2368
NSN 5965-01-616-3838
NSN 6610-00-647-3830
NSN 6685-01-562-1700
NSN 6320-00-110-8005
NSN 4140-01-303-9488
NSN 5998-00-233-7425
NSN 6240-01-425-1545