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 6685-01-348-1801
NSN 6105-01-145-4895
NSN 5996-01-584-5603
NSN 7035-00-238-3662
NSN 6130-00-598-2034
NSN 6240-01-544-9579
NSN 6110-00-011-3711
NSN 5990-01-581-5103
NSN 4140-01-014-3454
NSN 7035-01-381-5411
NSN 5935-00-005-5984
NSN 5965-00-111-2073