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 5905-01-534-4708
NSN 6650-00-155-8431
NSN 5996-01-463-3152
NSN 5895-01-113-7224
NSN 4140-00-591-6315
NSN 6645-01-089-6459
NSN 5999-01-318-6651
NSN 6135-00-643-4843
NSN 5915-01-183-5010
NSN 5950-01-336-9991
NSN 6650-01-199-4968
NSN 5855-01-382-8725