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 6685-01-067-8474
NSN 5999-01-356-9419
NSN 5925-00-559-7527
NSN 5920-00-767-9049
NSN 4140-01-426-8428
NSN 5910-01-140-6400
NSN 5925-00-442-1943
NSN 6685-01-321-3327
NSN 2925-00-789-1106
NSN 5998-01-398-7523
NSN 5835-00-880-6477
NSN 6220-01-344-7616