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 6685-01-645-2288
NSN 6240-01-211-4507
NSN 6135-01-223-3869
NSN 2925-01-027-1293
NSN 6320-01-145-9013
NSN 6685-00-467-4391
NSN 6135-01-351-0361
NSN 5965-01-046-9619
NSN 5960-00-023-9488
NSN 4140-00-081-6814
NSN 5915-00-276-8332
NSN 5950-01-164-5106