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Threaded inserts are a great way to have bolt type threads in wood. On the inside, standard 5/16-18 threads allow you to thread in any matching fastener. The outside is "threaded" with intermittent threads. This allows the thread to cut into the wood as it's turned. To drive it into the wood you can use a hex wrench, a hex driver in a variable speed drill or by threading a short stud into the insert and driving it by wrench or variable speed drill.

Since the outside thread varies by manufacturer, we don't attempt to describe it here and recommend that once you receive your order, you measure them and drill test holes in a scrap piece of the same wood. This way you can determine exactly what hole size is best for your material. Hard woods will require a larger pilot hole while softer woods can have smaller pilot holes.