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 5920-00-149-1469
NSN 5855-01-632-1509
NSN 6150-00-084-7571
NSN 5975-01-057-8386
NSN 5999-01-464-4986
NSN 6650-00-764-4136
NSN 6135-00-681-2702
NSN 5925-01-097-0334
NSN 6610-00-670-7803
NSN 5975-01-025-9990
NSN 6320-00-322-3460
NSN 5930-01-554-4524