One flat keyway on largest diameter
A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes shaft(1), straight; and axle(1), straight.
Classification: Transmission shafts and cranks, except camshafts and crankshafts
NSN 6240-01-605-4455
NSN 6620-01-483-1138
NSN 5925-00-850-9295
NSN 5915-01-369-0811
NSN 6110-00-271-9928
NSN 6110-01-608-5651
NSN 6620-01-312-6350
NSN 5998-01-081-2366
NSN 5998-00-661-0380
NSN 6650-01-415-5573
NSN 6685-00-831-5989
NSN 6105-01-050-2059