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 5998-01-303-5874
NSN 6650-01-411-6292
NSN 6320-01-088-1109
NSN 5950-00-024-8786
NSN 5925-01-646-8052
NSN 6240-01-497-3085
NSN 6220-01-375-3801
NSN 5835-01-576-9013
NSN 6145-01-381-5589
NSN 6650-01-038-9079
NSN 5910-01-447-3405
NSN 6220-01-317-4389