Threaded inserts are typically used when the object in which a threaded fastener is being installed is made of a soft material. For hard materials, a screw or bolt can be often driven into the object without the need for a threaded insert. For soft materials, however, driving a screw or bolt directly into the object can damage it. A simple solution is to use a threaded insert. The threaded insert is placed inside the object, after which the threaded fastener is driven into the insert.
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