Largest step hex 0.500 in. Across flats
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 6110-00-623-5328
NSN 5975-01-151-9790
NSN 6135-01-204-3882
NSN 6130-00-080-0506
NSN 6110-01-605-2450
NSN 5855-01-580-4634
NSN 5910-01-190-3437
NSN 5965-01-431-7377
NSN 6135-01-275-9767
NSN 4140-01-435-6540
NSN 5930-01-443-1970
NSN 5985-00-942-5562