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 4140-01-342-4703
NSN 5990-01-527-7640
NSN 5998-01-556-9028
NSN 5996-00-613-1761
NSN 5998-01-150-5038
NSN 5935-01-209-8738
NSN 5990-00-138-9504
NSN 5950-01-481-5271
NSN 6240-00-432-6749
NSN 5998-00-493-5998
NSN 5910-01-128-3765
NSN 5985-01-232-8059