An insert nut provides a threaded socket for a wooden workpiece, similar to a wall anchor. Insert nuts are inserted into a pre-drilled hole by one of two means: screw in and hammer in. In both cases, the external protrusions bite into the wood, preventing the nut from either turning or pulling out.
They are threaded internally and externally, the former provides stability for the bolt and the latter provides grip to the object. This also allows the bolt to be easily replaced.
Insert nuts are advantageous over barrel nuts and T-nuts, because they can be installed from one side of the workpiece.
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