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 6110-00-075-7880
NSN 5960-00-312-7868
NSN 6150-01-261-0706
NSN 6220-00-379-4044
NSN 6685-00-509-2380
NSN 6110-01-229-7627
NSN 5930-01-290-5371
NSN 5990-01-606-1873
NSN 5855-01-013-6864
NSN 5985-00-953-1519
NSN 6685-01-310-9959
NSN 6105-01-602-8187