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 5925-00-299-8037
NSN 5945-00-104-5591
NSN 6150-01-543-0892
NSN 6650-01-258-0811
NSN 6105-00-977-8644
NSN 6320-00-139-1090
NSN 6110-01-026-0312
NSN 5985-01-246-1773
NSN 5895-01-186-0414
NSN 5855-01-572-4521
NSN 5895-01-121-0114
NSN 5910-01-552-0863