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 7035-00-417-2967
NSN 5998-01-098-9664
NSN 4140-01-190-5493
NSN 5950-00-236-9875
NSN 2925-00-265-7539
NSN 6105-00-740-7757
NSN 5950-01-575-1859
NSN 5835-01-436-6549
NSN 6240-01-363-4658
NSN 5975-01-050-8114
NSN 5960-00-253-1473
NSN 5950-01-357-5072