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 6620-00-104-6937
NSN 6240-01-123-0968
NSN 5905-01-055-6277
NSN 6150-01-337-5098
NSN 6110-01-548-8864
NSN 5905-01-512-1898
NSN 6150-01-423-4796
NSN 5910-00-732-8548
NSN 6135-00-913-2062
NSN 5999-01-552-8138
NSN 5855-01-178-6396
NSN 5920-01-556-7297