Most shafts warp and bow during heat treating. For this reason we machine all the critical areas (splines, bearing journal, flange face, and brake pilot) AFTER heat treat. The splines are machined to the correct pressure angle for the particular application, typically 30 or 45 degrees. Most manufacturing engineers will concur with this method of production. All axles are custom made to order with your choice of length, spline, and most popular bolt patterns. Features include a non tapered body and a ductile flange which allows for shortening and/or an additional bolt pattern now or later if needed.