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 5920-00-925-2639
NSN 6685-01-010-3234
NSN 5945-01-238-7378
NSN 5990-01-583-2870
NSN 5855-00-997-6225
NSN 6685-00-992-2259
NSN 2925-01-415-2140
NSN 5835-00-398-9678
NSN 6105-01-383-3657
NSN 6240-01-026-1376
NSN 5950-01-246-2835
NSN 6240-00-022-9023