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 6145-01-629-3936
NSN 5935-00-441-9638
NSN 5985-00-694-5381
NSN 5950-01-154-1511
NSN 5855-00-446-5921
NSN 6650-01-289-3901
NSN 6135-00-347-0595
NSN 5999-00-187-2205
NSN 6135-00-078-9931
NSN 6320-01-399-6177
NSN 6650-00-401-1496
NSN 6610-00-419-3154