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 5945-01-334-9697
NSN 5975-00-197-9762
NSN 5985-01-519-9295
NSN 5835-00-927-6013
NSN 6650-01-049-5361
NSN 5960-01-381-2478
NSN 6150-00-562-3879
NSN 6645-01-152-5207
NSN 6150-01-272-0096
NSN 5905-00-885-6373
NSN 5895-01-462-2650
NSN 5960-01-203-3619