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 5998-01-540-4278
NSN 5996-01-416-1489
NSN 5920-01-627-3189
NSN 6240-01-418-1871
NSN 6620-00-313-9237
NSN 4140-00-754-8048
NSN 5996-01-146-5765
NSN 5975-01-184-5833
NSN 6685-01-522-7260
NSN 6135-00-593-6831
NSN 5895-01-062-2074
NSN 6320-00-456-2092