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 5925-00-973-1160
NSN 5945-01-068-3215
NSN 5996-01-274-3980
NSN 5920-00-246-4657
NSN 6110-01-442-0661
NSN 6610-01-440-4314
NSN 2925-01-426-3410
NSN 5855-00-631-4565
NSN 6645-00-602-5968
NSN 5985-01-065-3077
NSN 5990-00-471-9767
NSN 5855-01-581-9697