Special Features:

Qrockwell c hardness 33-43; includes woodruff key, dim. O/a 0.255 min, 0.257 in. Lg, 0.124 min, 0.126 in. W, 0.461 in. Nom from keyway center to end; 2nd end internally thd 0.500 min, 0.560 in. Lg; 10-32nf-3 thd designation

Properties:

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.