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 6650-01-601-1618
NSN 6620-01-528-0759
NSN 6150-00-797-2923
NSN 5920-00-291-1379
NSN 5920-01-039-5393
NSN 6220-01-505-3821
NSN 5998-00-109-0963
NSN 5960-00-289-6591
NSN 6110-01-175-8990
NSN 5835-01-200-7153
NSN 6685-01-524-2876
NSN 5905-00-269-3931