Special Features:

Largest step is hex shaped; one shoulder has screw threads 0.875 14 unf-2a; one shoulder has screw threads 0.875 14 unf-2a-lh; largest step has a 0.094 in. Diameter hole drilled thru; heat treatto obtain an expansion coefficient of 0.5 x 10 minus 6 to 0.7 x 10 minus 6 inch/inch/degree f

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.