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 6130-01-339-9873
NSN 6685-01-057-7720
NSN 5855-00-198-3197
NSN 5950-01-013-7155
NSN 6145-01-099-0448
NSN 5996-01-604-9653
NSN 5950-01-222-1021
NSN 6150-01-363-0250
NSN 5985-01-222-6861
NSN 5925-01-412-8210
NSN 6145-01-465-4770
NSN 5990-01-200-3711