Hexagon socket step screws are generally assembled by Hexagon Socket Step Screws with a spring washer and a flat washer combined with threaded thread. Hexagon socket combination screws are classified into grade 4.8 socket combination screws and grade 8.8 socket combination screws according to their materials. Its general material on the market is the 8.8-level hexagon socket combination screw. Generally, manufacturers use screw wire 10B21 to produce. Hardening reaches 8.8 levels, but hydrogen removal is required to prevent spring washers and hexagon socket bolts from breaking.

Hexagon socket screws are mostly used for the connection between thin metal plates and play a role in the connection. When connecting, first make a threaded bottom hole for the connected piece, and then screw the inner hexagonal combination screw into the threaded bottom hole of the connected piece. Due to the high hardness of the threaded surface of the combined screw, the internal thread can be tapped in the threaded bottom hole of the connected part to form a high-strength hexagon socket combined screw for connecting steel structures. It is mainly used for railway and highway bridges, boiler steel Structures, industrial plants, high-rise civil buildings, tower mast structures, cranes and their steel structures require the use of friction-type high-strength hexagon socket screws. It is characterized by a hexagon socket bolt, also called a hexagon socket bolt, with a dodecagon at the end. When installing, Hexagon Bolts Manufacturer must use a special electric wrench with two socket heads on top and bottom, one is sleeved on the hexagon of the nut, and the other is sleeved on the decagon of the hexagon socket screw. When tightening, apply a clockwise torque to the nut, and apply an equal counterclockwise torque to the dodecagon of the bolt, so that the end of the hexagon socket screw and the neck of the dodecagon are subjected to torsion shear until the neck is cut. So far, the installation is over.