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 5895-01-617-7750
NSN 6240-01-257-9004
NSN 6620-00-410-8935
NSN 5975-00-734-6243
NSN 6620-01-549-6653
NSN 4140-01-633-7970
NSN 5925-01-235-0710
NSN 5925-01-380-7490
NSN 5996-01-277-1501
NSN 5920-01-619-2621
NSN 5835-01-060-3618
NSN 5960-01-165-1956