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 6220-01-486-8664
NSN 6650-01-289-8598
NSN 6645-01-345-4294
NSN 5835-00-787-8122
NSN 5925-01-325-1989
NSN 5905-01-414-2014
NSN 6105-00-874-4379
NSN 5950-01-145-4199
NSN 5855-00-688-9954
NSN 6145-01-645-6164
NSN 6650-00-008-3941
NSN 5930-00-594-9442