Second step has one woodruff keyway 0.148 in. W 0.160 in. Deep; largest diameter is flatted 0.630 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 5960-00-650-7476
NSN 5930-00-237-8597
NSN 5999-00-266-3805
NSN 6320-01-523-4954
NSN 6220-00-407-1054
NSN 5945-01-384-3522
NSN 6220-01-304-4921
NSN 6620-01-562-0615
NSN 5910-01-575-5832
NSN 5930-00-349-7017
NSN 5835-01-104-8914
NSN 6685-01-310-5587