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 5985-00-040-0412
NSN 5950-01-070-7414
NSN 5965-01-570-2804
NSN 5985-01-433-8866
NSN 5960-01-632-6576
NSN 5915-01-597-9432
NSN 6240-00-013-4764
NSN 5975-01-589-9657
NSN 7035-01-581-9750
NSN 4140-01-240-4616
NSN 5999-00-440-7942
NSN 6650-01-004-6702