Maybe you know self drilling screws?

Jinghong Standard has a unique hexagonal self-drilling screw with a hexagonal head design, which is easy to tighten and remove using a wrench or screwdriver. Self-tapping and self-drilling design, in the use of hexagonal drilling screws, eliminate the step of pre-drilling, improve the installation efficiency, shorten the installation time. Compared with other screws, the hexagonal drilling screws of Jinghong standard parts are easier to fit with the nuts or threaded holes and less easy to slide. This design can maintain higher stability during fastening, reducing the risk of loosening due to sliding, and higher safety. In addition, the head of the hexagonal drilling screw has six ends, which allows the screw head to be rotated with more torque force than other screws, thus tightening the item more firmly. This feature is particularly important where high torque fastening is required to ensure the robustness and reliability of the connection. 

Jinghong standard parts are widely used in light industry, automobile manufacturing, construction, furniture manufacturing and woodworking fields. We combine carbide bits with high strength threads to ensure the stability and durability of the connection, so that the hexagonal drilling screws meet the needs of different application scenarios. For the use of hexagonal drilling screws, we should choose the appropriate screw specifications and materials, before installation, should check whether the screw is damaged or deformed, so as not to affect the fastening effect. Use appropriate tools such as wrenches or screwdrivers to tighten the cables. Avoid material damage or loose connections that may affect connection stability. For screws used for a long time, they should be inspected and replaced regularly to ensure the stability and safety of the connection. The hexagonal screw drilling tail of Jinghong standard parts meets the national standard, has a high surface hardness, and has the salt spray capacity of MIN48h. After carburizing layer treatment, the surface hardness is enhanced to ensure the strength of the teeth.