Detailed analysis of high strength bolt specifications

High-strength bolts are widely used in modern life, so understanding the specifications of high-strength bolts is of great help to our purchase and use. Next, let's take a look at the detailed analysis of high-strength bolt specifications for your reference. The high-strength bolt specification refers to the size of the high-strength bolt, which is stipulated in the national standard GB/T1228-91. The specification size of the high-strength bolt with the thread specification of M12~M30 can be referred to the standard. Therefore, it is very important to choose the right type of high-strength bolt. In the standard GB/T1228~1231-91, the torque coefficient of high strength large hexagon head bolt connection pair with thread specification M12~M30 is specified. The uniform value of torque coefficient is 0.11~0.150, and the standard deviation is less than or equal to 0.010. 8.8S high strength large hexagon head bolt connection pair can also be supplied according to customer requirements to ensure the torque coefficient. In addition, the national standard GB/T3632~3633-1995 specifies the fastening axial force of the torsional shear type high-strength bolt connection pair. Among them, the thread specification is M16~M24, and the uniform value of each batch of fastening shaft force has a certain fluctuation range on the basis of the nominal value, and the maximum and minimum values are also limited. At the same time, the standard deviation of the fastening axial force must also meet the requirements. Therefore, when purchasing and using high-strength bolts, we need to carefully check the specification parameters and relevant standards, and follow the national regulations to use qualified products to ensure the use effect and safety. In short, the specification parameters and standards of high-strength bolts are an important reference for purchase and use, we need to understand and master the relevant knowledge, and choose carefully. At the same time, manufacturers should also produce high-quality products in strict accordance with national standards to provide users with better service and quality assurance.