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 6220-00-117-4547
NSN 5950-00-526-0658
NSN 6610-01-618-7038
NSN 5965-01-039-2795
NSN 5915-01-061-9761
NSN 5915-01-578-1072
NSN 5999-01-491-1400
NSN 5930-00-427-5235
NSN 5920-01-522-0940
NSN 5950-00-192-6084
NSN 6220-00-758-8184
NSN 6150-00-081-2063