1st end splined on 2nd step
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 6320-01-279-0343
NSN 5945-01-415-0858
NSN 5998-01-472-2414
NSN 5998-00-612-1079
NSN 4140-00-171-1387
NSN 6320-01-514-6141
NSN 5990-00-963-1799
NSN 5930-01-155-0004
NSN 5998-00-504-8113
NSN 2925-01-415-2140
NSN 6110-01-340-4885
NSN 5996-01-633-7979