plastic butterfly screw

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.

...

In conclusion, the 40mm Tek screw is a reliable and efficient fastening solution for various construction and woodworking projects. Its self-drilling design, superior holding power, and compatibility with different materials make it a valuable addition to any toolkit. Whether you are fastening metal, wood, or plastic, you can count on the 40mm Tek screw to provide a strong and secure connection. Next time you embark on a project that requires fastening, consider using 40mm Tek screws for a job well done.

...