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 5960-01-157-7009
NSN 5945-01-472-1956
NSN 5910-00-159-7786
NSN 6610-00-934-1044
NSN 6105-00-925-9906
NSN 5925-01-351-9405
NSN 5998-01-412-0746
NSN 6610-00-243-7025
NSN 5975-01-359-0759
NSN 6110-01-377-3352
NSN 6685-00-654-9912
NSN 5895-00-974-5100