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 6150-01-572-0896
NSN 6620-00-010-8190
NSN 5910-01-168-8008
NSN 6685-00-087-6925
NSN 5998-01-529-5667
NSN 5895-01-206-5280
NSN 6240-00-433-2707
NSN 5960-01-103-0906
NSN 5975-01-195-0239
NSN 5925-00-254-0562
NSN 6130-00-343-1660
NSN 5996-01-028-7884