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 6320-01-129-9656
NSN 5965-01-644-6633
NSN 5998-01-279-3627
NSN 6610-01-545-5648
NSN 5960-00-219-6148
NSN 6150-00-712-6391
NSN 5985-01-141-7059
NSN 5960-01-595-6515
NSN 6130-00-401-2291
NSN 6685-01-144-6818
NSN 7035-01-429-7954
NSN 6610-01-484-8745