With split and keyway
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 5895-01-387-8271
NSN 5935-01-493-4773
NSN 5965-01-416-9564
NSN 6620-00-125-9669
NSN 6110-01-073-3525
NSN 5855-01-474-6820
NSN 5925-00-805-2833
NSN 6145-00-797-3454
NSN 6145-01-246-7506
NSN 6145-01-497-0335
NSN 5835-01-258-5597
NSN 2925-01-556-0333