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 5998-01-364-1402
NSN 2925-00-400-5634
NSN 6110-01-521-3725
NSN 5905-01-169-8887
NSN 5925-00-720-1354
NSN 5999-01-421-1811
NSN 5950-01-348-1945
NSN 5935-00-844-7835
NSN 5895-01-423-1485
NSN 5998-01-016-8442
NSN 6150-01-569-3273
NSN 6650-01-560-7812