If we are going to use a screw, then the first thing we need to do is to understand the performance of the screw, which is its characteristics, so that we can use the screw in the most correct place. Because there are many types of screws, the performance of each of these screws is different, so that the screws have different uses. In order to prevent us from using the wrong screws, we must understand the performance of the screws, so that we can use the screws in the most correct place.
　　First of all, let's take a look at self-tapping screws. Self-tapping screws with a diameter of 0.8mm to 12mm are available for tapping screws. For such screws are generally with a high hardness, self-tapping screws to be screwed into the test, is to screw into a test version, and then test whether the hardness of the screw standard, if substandard will need to analyze Where is the problem? In order to find a solution.
　　Another is the drilling screw, as the name suggests is the general appearance of the screw tail drilling shape, the hardness of this screw is also very strong, compared with the ordinary screw, not only to maintain the better ability to connect objects The effect is also very strong, for this performance of the screws are generally do not need auxiliary processing, you can directly drill a hole directly above the object into the lock, not only very easy to use, but also greatly improve the work effectiveness. This drilling screw in all areas can be said that the staff of choice.
From the above we can find out that we are still very important in understanding the performance of various screws when using screws.
Anti-corrosion technology
　　Stainless steel screws are made of metal, and there are four main ways to prevent metal corrosion: the nature of the material itself, the environment in which it is used, the interface between the data and the environment, and the design of the metal structure to be improved. If a complete anti-corrosion alloy is used to make the stainless steel screw Unless there is a special demand, it is impractical in economic terms or the complete separation of the screw's appearance from the corrosive elements of the environment that are corruptible may not be feasible in practice and may be very difficult. Improve the metal structure design can be in a situation to improve the special circumstances of the impact, but most stainless steel screw design can not be fully corrected, and its maintenance is not permanent, so this method can not basically solve the problem, as long as the interface Anti-corrosion, that is, the appearance of anti-corrosion treatment is the most widely used method.
　　Stainless steel screw anti-corrosion surface treatment refers to the use of various methods in the metal surface to maintain the layer, its role is to isolate the metal and corrosive environments, to inhibit the corrosion process, or reduce the corrosive medium and metal appearance, and reach Avoid or mitigate the purpose of corrosion.