See drawing for further details
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 6240-00-170-5302
NSN 6110-01-435-6610
NSN 5855-00-055-1579
NSN 6685-00-140-5237
NSN 5985-01-569-6740
NSN 5975-00-557-2158
NSN 6240-01-048-2769
NSN 5998-00-409-9017
NSN 5925-01-497-3259
NSN 5998-00-299-7891
NSN 6650-00-925-1274
NSN 5996-01-185-9733