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 5895-01-225-0609
NSN 5950-00-345-1620
NSN 6320-00-593-0379
NSN 5915-01-456-4757
NSN 6135-01-441-5746
NSN 5975-00-761-2834
NSN 5975-00-869-0688
NSN 5996-01-435-5547
NSN 6220-01-066-1193
NSN 5996-01-602-5655
NSN 5990-00-915-4531
NSN 6150-00-081-9928