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 5985-00-824-0093
NSN 6320-00-270-8222
NSN 5996-01-569-6049
NSN 5930-01-127-2047
NSN 7035-01-591-2766
NSN 6150-01-384-2405
NSN 5905-01-497-3530
NSN 5835-01-442-6482
NSN 5925-00-450-1255
NSN 6645-01-406-6077
NSN 6220-01-609-0916
NSN 5960-00-954-7760