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 6110-00-669-6726
NSN 5930-01-461-0007
NSN 5950-01-423-0082
NSN 5910-00-416-9775
NSN 5999-01-449-1248
NSN 5920-01-277-6335
NSN 5855-01-418-2962
NSN 2925-01-364-7926
NSN 2925-00-099-4030
NSN 5965-01-172-3231
NSN 5935-00-137-6669
NSN 5855-01-643-5136