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 5915-01-595-7283
NSN 6320-00-925-0558
NSN 6105-01-547-7104
NSN 6650-00-658-9627
NSN 5996-01-281-7336
NSN 7035-01-158-7673
NSN 6610-01-223-3761
NSN 5999-01-386-6482
NSN 5990-00-518-0684
NSN 5920-01-338-3489
NSN 5915-01-006-4125
NSN 5855-01-474-6456