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 6135-01-242-6484
NSN 6610-01-372-2147
NSN 5965-01-210-7784
NSN 6645-01-335-5845
NSN 6320-01-103-1655
NSN 6145-00-763-6077
NSN 6645-00-145-6411
NSN 6645-01-315-2010
NSN 5998-01-303-1723
NSN 5935-00-075-8390
NSN 5998-01-322-4648
NSN 5975-01-433-4527