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 6620-01-462-1625
NSN 6320-01-046-5228
NSN 5855-01-569-8696
NSN 6685-01-486-7795
NSN 5996-00-445-8496
NSN 6135-01-564-8390
NSN 5920-00-705-2914
NSN 6240-01-425-1939
NSN 5895-01-463-8357
NSN 2925-01-346-7435
NSN 5950-00-754-6575
NSN 5990-01-251-7313