Special Features:

Nha is nsn 3910-01-428-7488; external involute spline has 27 teeth, spline pitch is 32/64, pressure angle is 30 degrees, base diameter is (.7307) and pitch diameter is (.8437), pin diameter is .0600. Internal involute spline has 5 teeth, spline pitch is 8/16, pressure angle is 30 degrees, base diameter is .5413 and pitch diameter is .759/.800, pin diameter is .2160

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.