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 6145-01-150-1557
NSN 6135-01-633-8502
NSN 5975-01-198-3811
NSN 5925-01-172-7247
NSN 5985-00-740-7154
NSN 6135-01-516-8171
NSN 6240-00-272-8601
NSN 5835-01-130-4952
NSN 5999-01-509-7278
NSN 5975-00-868-2356
NSN 5910-00-844-9541
NSN 6105-01-268-2290