The material of the bolt and nut has a great influence on the connection fixation. The following are several important aspects: Strength: The strength of the material determines the reliability and bearing capacity of the threaded connection. The high strength material can provide greater fastening force and maintain the stability of the connection. Corrosion resistance: In some special environments, such as high temperature, humidity or chemical soaking conditions, bolts and nuts need to have good corrosion resistance. Materials with poor corrosion resistance are easily corroded, resulting in connection failure. Machinability: The material of the bolt and nut needs to be easily machined into various thread specifications and shapes. Some materials may be more suitable for thread cutting and form machining operations than others. Thermal expansion and cold contraction: temperature changes can cause metal thermal expansion and cold contraction, and bolts and nuts of different materials respond differently to temperature changes. Choosing the right material can avoid loosening or damage of the connection caused by thermal expansion. Weight: The material of the bolt and nut will also affect the weight of the connector. In some special applications, lightweight design requirements may require the selection of lightweight materials to reduce the overall load. In short, the selection of bolt and nut materials suitable for specific application conditions is an important factor in ensuring the reliability and durability of the connection. The specific choice of material should be based on a comprehensive assessment of the environment and requirements of the connector
