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       Choose the mechanical properties of stainless steel screws, especially the strength requirements. Some screws require higher strength, so the choice of the screw material itself is stronger. Requirements for corrosion resistance of materials under working conditions. Some screws on standard parts are used for products with strong corrosion properties, which requires us to choose threads with high corrosion resistance. The operating temperature is required for the heat resistance (high temperature strength, oxidation resistance) of the material. Some screws are used for high temperature applications, which requires us to choose high temperature resistant screw materials. Requirements for material processing performance in terms of production process. In the production process, some screws and wires are handled better, some are more difficult to handle, and hardness is more difficult in all aspects. This requires us to choose the right screw material hardness, which is conducive to processing and production. Other aspects, such as weight, price, and purchasing factors must be considered. The weight, price, purchase and other factors of the screw itself affect the choice of stainless steel screws, and the screw material can be better selected by properly considering these aspects.