plastic expansion bolt

When it comes to setting up a television, stability and safety are paramount. One often overlooked component in the installation of TV mounts is the butterfly screw. This unique hardware component plays a crucial role in securing your TV mount to the wall, ensuring that your viewing experience is both safe and enjoyable. In this article, we will delve into what butterfly screws are, their specific advantages, and tips on how to choose the right ones for your TV mount.


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The design of an M8 wedge anchor is simple yet effective. It consists of a threaded rod with a nut and washer, accompanied by a wedge-shaped expansion sleeve. When installed, the anchor is drilled into a pre-drilled hole in the concrete, and then the bolt is inserted and tightened. As the bolt is tightened, it pulls the wedge-shaped sleeve against the sides of the hole, creating friction and causing the sleeve to expand. This expansion locks the anchor securely in place, providing a strong hold that can withstand significant loads.

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