Second end has one flat keyway
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 6645-01-128-9353
NSN 6105-01-147-0576
NSN 6130-01-513-8072
NSN 5998-00-201-3774
NSN 6610-00-664-2190
NSN 5960-01-469-2006
NSN 5915-01-167-8506
NSN 6145-01-381-1369
NSN 5930-01-349-8443
NSN 6145-00-319-4643
NSN 5990-01-160-6978
NSN 6105-00-265-7545