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 5960-01-552-0862
NSN 5998-01-317-2844
NSN 6610-00-930-4408
NSN 6220-01-604-2222
NSN 6650-01-656-9398
NSN 6620-01-213-8772
NSN 6130-01-196-4545
NSN 5996-01-445-5528
NSN 7035-01-627-2206
NSN 6610-00-176-5486
NSN 5950-01-317-6571
NSN 6145-01-262-7938