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 6320-00-925-0558
NSN 5965-01-041-8139
NSN 6685-00-878-7161
NSN 6145-01-054-0919
NSN 5895-01-476-7344
NSN 7035-01-293-3431
NSN 4140-01-531-3080
NSN 6105-01-588-9129
NSN 5930-00-526-7645
NSN 6240-01-432-7926
NSN 6135-01-413-4747
NSN 5855-00-494-9581