| Material: | Stainless Steel |
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| Type: | Hexagon Head |
| Connection: | Common Bolt |
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Screw in back bolt is a fastening connecting element used in the fields of construction and machinery, mainly composed of a screw, an expansion head, and a flange nut. This product is usually made of 304 stainless steel or 316L stainless steel material, which has the characteristics of simple structure, easy operation and installation, and does not require any adhesive to achieve a firm anchoring effect.
The force principle of the screw in back bolt is achieved through the bottom stress free mechanical locking technology, which is different from traditional expansion screws (relying on stress friction for force). When the anchoring depth of the stone is 15mm-30mm, the expansion force is ineffective for virtual anchoring. Therefore, the screw in back bolt is particularly suitable for applications that require high reliability and seismic resistance, such as building curtain walls, bridges, overpasses, etc.
In addition, rotary back bolts are also divided into various types, including percussion back bolts, anti loosening back bolts, and double section back bolts, to meet the needs of different materials and thicknesses. For example, the tapping type back bolt is suitable for various hard and soft stones such as granite, marble, sandstone, shale, etc.
The rotary back bolt has been widely used in the construction industry due to its unique design and excellent performance, and its installation steps are relatively simple: first, select a drill bit with a specified diameter for drilling, then check whether the aperture and depth are qualified, and finally place and screw in the back bolt to complete the installation.
In short, the screw in back bolt has become an indispensable tool in modern construction engineering due to its high strength, anti loosening, and good seismic performance.
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