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 6620-00-907-2670
NSN 5999-01-201-3220
NSN 2925-01-146-0278
NSN 5915-01-516-2133
NSN 5990-00-827-0684
NSN 5920-00-544-6564
NSN 6620-00-439-2442
NSN 5920-00-607-3385
NSN 6650-01-335-5194
NSN 4140-00-443-9732
NSN 5985-00-285-0798
NSN 6650-00-185-3133