Heavy Duty Spiral Expansion Screw

Our Spiral expansion screw is a fastener that uses a wedge-shaped slope to promote expansion and generate frictional grip force to achieve a fixed effect. Its working principle is through the combination of screws and expansion tubes. When the nut is tightened, the screw moves outward, and the conical part moves through the axial movement of the thread, forming a large positive pressure on the outer circumference of the expansion tube, thus achieving a fixing effect.
Our expansion rotating bolts have extremely high fastening performance,Spiral expansion screws are usually composed of a screw and a metal casing (such as iron sheet or steel pipe), with one end of the screw being threaded and the other end having a taper. Half of the metal jacket has several incisions. Insert them together into the holes made in the wall, then tighten the nut. The nut pulls the screw outward and the taper is pulled into the iron sheet to achieve fixation.
Our advantages of spiral expansion screws include strong fixing force, wide applicability, and easy installation. It can be used on different types of wall materials, such as steel, aluminum, etc., and the installation process is relatively simple. In addition, spiral expansion screws can keep the wall flat and easy to remove after use, without causing damage to the wall.