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 6650-01-328-8363
NSN 6240-01-545-3608
NSN 7035-01-529-2049
NSN 6320-01-097-5347
NSN 5996-01-580-0582
NSN 5895-01-414-2792
NSN 6645-00-932-1464
NSN 5915-00-843-4555
NSN 5965-01-381-2998
NSN 5990-01-174-4469
NSN 4140-01-423-1647
NSN 6220-00-269-3783