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 6150-00-930-8000
NSN 5999-00-494-6595
NSN 6135-00-269-5843
NSN 4140-01-077-7555
NSN 6320-00-925-0558
NSN 7035-01-026-1171
NSN 6320-00-456-0836
NSN 5990-01-652-7373
NSN 6150-01-423-8830
NSN 5925-00-206-3580
NSN 6220-00-054-5741
NSN 6645-01-500-0827