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 6110-00-962-2881
NSN 6645-00-183-8812
NSN 6150-01-160-9124
NSN 5998-01-421-5410
NSN 5960-00-828-8279
NSN 5855-01-358-1939
NSN 5975-00-217-4910
NSN 7035-01-487-6481
NSN 6645-00-429-0172
NSN 5930-01-532-0640
NSN 5945-00-285-8740
NSN 6320-01-123-6814