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 5920-01-559-5559
NSN 6685-01-135-4357
NSN 5920-01-190-9032
NSN 5950-01-430-3338
NSN 6150-00-233-8035
NSN 5975-01-294-6449
NSN 6145-00-459-4899
NSN 6130-00-702-8865
NSN 6320-01-446-8050
NSN 5960-01-321-2750
NSN 6130-00-078-9310
NSN 5990-00-822-5451