Special Features:

1st end 6th step threaded, 0.3125-24unjf-3a; thd 0.280 in. Lg; 1st end 8th step involute spline, 14 teeth, diametral pitch 40/80, pressure angle 45 deg, 0.320 in. Root dia, 0.350 in. Pitch dia, 0.370 in. Od; largest step also involute spline, 19 teeth, diametral pitch 38, pressure angle 20 deg, 0.433 in. Root diameter max, 0.500 in. Pitch dia, 0.550 in. Major dia, 0.4698 in. Base circle dia

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.