Set Screws

Set screws are sometimes called setscrews, socket set screws, or grub screws. They are a type of threaded fastener, most often used for securing components in place. This generally means affixing two or more loose parts to one another, for example by holding one component tightly against (or inside) a second surface.

The key pinning action of one component against another is what differentiates set screws and grub screws from general-purpose screws. In short, they are used to create compression forces which hold two loose objects firmly together without having to rely on a nut.

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