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 6110-01-418-0802
NSN 5985-01-431-2324
NSN 5855-01-175-3990
NSN 5985-00-872-1905
NSN 6135-00-152-8729
NSN 5905-01-206-4998
NSN 6645-00-313-2324
NSN 6645-00-620-9294
NSN 5960-01-491-2993
NSN 5950-01-381-2280
NSN 7035-01-423-8343
NSN 5990-01-501-5409