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 5998-01-123-4950
NSN 6105-00-500-7225
NSN 7035-01-491-1464
NSN 6130-00-104-8039
NSN 5985-01-022-2897
NSN 4140-00-008-4912
NSN 6685-00-146-2308
NSN 5945-00-758-4024
NSN 5965-00-078-7615
NSN 5960-01-157-2641
NSN 6220-00-033-7234
NSN 5960-01-054-3752