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 6220-01-389-1606
NSN 5925-01-364-2566
NSN 5835-00-244-4956
NSN 5930-01-543-4301
NSN 5930-01-029-2174
NSN 5855-01-244-9785
NSN 5855-01-175-3990
NSN 6145-01-524-7113
NSN 5990-00-721-6666
NSN 6130-00-058-6489
NSN 6110-01-146-9704
NSN 5915-01-462-5900