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 5930-00-311-1849
NSN 5985-00-187-8985
NSN 5990-01-386-5561
NSN 6650-01-604-4445
NSN 5895-01-370-3351
NSN 6620-01-494-9858
NSN 6620-00-115-9050
NSN 4140-01-207-0452
NSN 6220-00-461-1494
NSN 5930-01-161-7691
NSN 7035-01-432-2424
NSN 5945-01-029-3871