Special Features:

First end externally threaded 1.500 in. Lg, 0.063 in. Nom dp chamfer second end; additional flat 21.125 in. Nom from second end, 0.500 in. Nom lg, 0.340 in. Min and 0.343 in. Max w, in line w/first flat, two additional identical flats on second end except rotated 90 deg

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.