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 6240-00-187-4306
NSN 6110-01-622-1983
NSN 7035-01-136-3618
NSN 5935-00-800-3971
NSN 6135-00-080-9176
NSN 5925-01-117-8170
NSN 5855-01-529-6369
NSN 6645-00-425-6199
NSN 5895-00-418-4639
NSN 6650-00-901-4914
NSN 5910-01-657-7926
NSN 5985-01-386-3752