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 6320-00-194-4252
NSN 6150-01-547-1902
NSN 5965-01-109-2917
NSN 5998-01-579-8448
NSN 6130-01-378-7082
NSN 5835-01-498-9410
NSN 6650-01-481-1165
NSN 5996-00-934-9698
NSN 6130-01-195-6510
NSN 5835-01-070-1882
NSN 5935-01-187-9567
NSN 5975-00-383-7679