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 5930-00-900-6614
NSN 5960-01-130-9414
NSN 5910-00-459-6862
NSN 6110-01-381-7014
NSN 6145-01-225-0969
NSN 5996-01-365-8034
NSN 5920-01-230-3035
NSN 5915-01-436-5113
NSN 6110-01-578-2010
NSN 6320-01-170-4068
NSN 6135-01-519-7879
NSN 6220-00-228-3735