1. What’s the Difference Between a Dowel Pin and an Internally Threaded Dowel Pin? Internally Threaded Dowel Pin A common question first: what makes an Internally Threaded Dowel Pin different from a regular dowel pin? A standard dowel pin is mainly used for positioning and alignment, commonly found in molds, mechanical components, and assembly jigs.The internally threaded dowel pin, however, adds one key feature — a threaded hole inside the center. This thread isn’t for decor