Keyway at center .250 x .125
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 6110-01-145-3261
NSN 6620-00-144-7201
NSN 2925-01-596-9448
NSN 2925-01-455-2558
NSN 5905-01-392-0802
NSN 5985-01-026-1133
NSN 5835-01-281-1655
NSN 5895-01-437-7734
NSN 5985-01-604-8923
NSN 7035-00-870-0290
NSN 5950-01-081-2842
NSN 6650-01-573-7165