[Al Skierkiewicz]

We came across some hex shaft that was not concentric in the past. If you took a close look at the flats you would see that they were not all the same size. We first noticed an issue when we sent the shaft to a sponsor for turning and it came back offset. I found that knocking off the corners of the hex shaft until the turned part just meets a single flat showed that not all sides were the same. As I remember, aluminum hex was really bad for this problem. You get what you pay for.