Hex bolts are usually used in steel structures with two flat washers and high strength nuts. Torsional shear bolts are also used in steel structures. The compressive strength class is 10.9. It is suitable for connecting power distribution equipment and large and medium-sized steel structure products. The nominal compressive strength of the bolt material reaches 400MPa; the yield ratio value of the bolt material is 0.6; the nominal tensile strength of the bolt material reaches 400×0.6=240MPa, and the characteristic level is 10.9 bolts. The hexagonal head of the bolt is different from the hexagonal head of the general outer hexagonal bolt. The size of the hexagonal head of the bolt exceeds the specification of the general hexagonal head bolt, so the bolt can also be called a hexagonal head bolt. The raw materials for the production of bolts in our company are all high-quality stainless steel plates produced by famous large and medium-sized steel production companies in China according to the relevant raw material specifications, and are manufactured and processed by the world's leading technical professional production equipment. Select a professional heat treatment process production line. All production stages are strictly controlled by the product quality inspection unit. On-site inspection eliminates the generation of unqualified products from the source, ensuring that the performance parameters of each bolt meet the actual product implementation standards. Our company is an ISO9001 international quality system certification company. Our factory has complete testing equipment, strict quality management standards, and strict quality inspection of finished products. The large and medium-sized hexagonal bolts produced by our company are exquisite, stable in quality, strict in testing, and affordable. We also give product quality inspection qualification certificates. Bolts of various specifications and models should be used in dozens of large and medium-sized key engineering projects around the world; long-term cooperation with many famous steel structure engineering design companies in China, and exported to Russia, Iran and more than a dozen countries and regions, receiving unanimous affirmation and five-star praise from construction units and customers; trusted by customers all over the country!