Do you know the biggest feature of self-tapping screws?

According to different working conditions, there are many kinds of self-tapping screws: head outer hexagonal, pan head, countersunk head, inner hexagonal, self-tapping and self-drilling. Although there are many kinds of self-tapping screws, as fasteners, various self-tapping screws still have certain common points, such as material, heat treatment, hardness, surface treatment, production process and so on. The self-tapping screws of Jinghong standard parts are subjected to precise heat treatment, such as the carburizing of carbon steel and the solid solution hardening of stainless steel, so as to ensure that the self-tapping screws meet the relevant mechanical properties and performance standards. As a quick installation fastener, self-tapping screws can be said to be soft inside and rigid outside, the surface hardness is relatively high, and the core toughness is good, which is also the most prominent and important characteristics of self-tapping screws. Because the surface hardness of the self-tapping screw is low, it can not be screwed into the connecting matrix, and if the core toughness is poor, it will be broken once screwed and can not be used.

Jinghong fasteners use advanced surface treatment technology to protect the surface of self-tapping screws, and electroplating is commonly used. In addition, the production of self-tapping screws is basically the cold heading process, and the high-speed cold heading machine and high-speed wire rolling machine or high-speed wire rolling machine are used. The reason why the high-speed machine emphasizes the high speed is because the high-speed machine is good in forming the salt self-tapping nail head and the thread quality is high, which can ensure the quality of the product.