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 6685-01-112-5746
NSN 5905-01-190-2503
NSN 5915-00-156-7877
NSN 5945-01-654-3926
NSN 6650-01-368-3286
NSN 6110-00-124-8940
NSN 5945-01-228-0638
NSN 5996-00-726-4785
NSN 5925-01-553-2874
NSN 5920-00-081-9156
NSN 7035-01-361-1311
NSN 5925-00-008-4413