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 5855-01-307-4520
NSN 5985-01-504-7882
NSN 5950-01-453-5109
NSN 6685-00-615-0559
NSN 6320-01-195-5583
NSN 6105-01-436-9230
NSN 6150-00-925-4231
NSN 6620-00-596-1951
NSN 6320-01-308-0009
NSN 6145-00-156-4394
NSN 6110-01-497-5430
NSN 5910-00-798-8792