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 6240-00-011-3239
NSN 5920-01-571-8027
NSN 5975-01-354-2086
NSN 5985-00-221-9051
NSN 5985-01-508-6994
NSN 5895-00-705-5876
NSN 6105-00-116-1249
NSN 5945-01-296-4450
NSN 5965-01-255-8691
NSN 6685-01-170-5651
NSN 5999-01-658-5240
NSN 5996-00-543-1566