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Threaded inserts are used to repair stripped threads in plugs and other parts or to create a new thread in a hole for fastening applications. They can also be used to convert a standard threaded hole to accept metric fasteners and vice versa. Thread repair inserts are installed into an existing hole with an installation tool to repair stripped threads. Press inserts can be pressed into soft materials such as plastic to create a threaded hole in the material. Nut inserts can create permanent threads in thin materials and provide a finished look that's nearly flush.