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 6685-00-407-1028
NSN 6135-01-447-3086
NSN 4140-01-246-7041
NSN 6130-01-235-7535
NSN 5990-01-629-4694
NSN 6110-00-618-4171
NSN 5930-00-763-7463
NSN 5905-01-363-6998
NSN 5975-00-455-9388
NSN 5960-00-163-3324
NSN 5950-00-597-3661
NSN 6220-01-510-3927