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 5895-01-651-1747
NSN 5910-01-188-8442
NSN 6220-01-083-7596
NSN 6150-01-265-6892
NSN 5950-01-131-8548
NSN 6320-01-261-5983
NSN 6150-00-918-8357
NSN 6105-01-634-0322
NSN 5915-00-823-4742
NSN 5965-00-920-0455
NSN 5975-00-244-0706
NSN 5990-00-011-2994