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 5905-01-609-8852
NSN 6240-01-245-6968
NSN 7035-00-455-7666
NSN 6130-00-285-8119
NSN 5998-00-151-9259
NSN 5925-01-650-4264
NSN 5998-01-361-7121
NSN 5930-00-068-6453
NSN 5965-01-120-6086
NSN 5905-01-099-9496
NSN 5998-00-825-2691
NSN 6110-01-417-8928