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 5930-01-417-5074
NSN 5945-00-999-9519
NSN 6145-01-537-9706
NSN 4140-01-437-3991
NSN 7035-00-064-7008
NSN 6130-00-643-4894
NSN 6105-01-442-3338
NSN 5920-00-888-7737
NSN 6620-01-169-9470
NSN 5905-00-992-6588
NSN 5835-00-874-1085
NSN 5915-01-159-4524