How should the expansion screw be tightened

Bolt, High strength bolts, Screw

2. Based on the size of the expansion screw you are using, choose a suitable drill bit (the diameter of the drill bit is the same as the diameter of the expansion pipe), and use a hand electric drill to drill holes on the wall (the depth of the hole is greater than the length of the expansion pipe to prevent the expansion pipe from completely inserting into the wall).

3. Use a small stick to clean the sand inside the hole to avoid sand blockage and inconvenient installation.

4. Use a hammer to completely smash the expansion tube into the hole.

5. Thread the screw through the installation hole of the fixed object, screw it into the expansion tube with a screwdriver, and tighten it.

A screw is a tool that utilizes the physical and mathematical principles of the oblique circular rotation and friction of an object to gradually tighten the mechanical components of the object. Screws are a common term for fasteners, commonly used in everyday language. Screws are essential industrial necessities in daily life, such as tiny screws used in cameras, glasses, clocks, electronics, etc; General screws for television, electrical products, musical instruments, furniture, etc; As for engineering, construction, and bridges, large screws and nuts are used; Transportation equipment, airplanes, trams, cars, etc. are used with both large and small screws. Screws bear important tasks in industry, and as long as there is industry on Earth, the function of screws will always be important. The screw has been a common invention in people's production and life for thousands of years, and according to its application field, it is the first great invention of humanity.