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 6145-00-033-2997
NSN 5855-01-381-6052
NSN 6645-00-526-9476
NSN 5985-01-079-2619
NSN 6110-00-881-8158
NSN 4140-00-891-3009
NSN 5935-01-343-2271
NSN 5920-00-050-0599
NSN 6130-00-372-4322
NSN 5985-01-605-2470
NSN 6130-01-180-9480
NSN 5935-00-900-4527