The following is the introduction of hexagonal combination screws other than high-strength bolts for buildings and factories:
High-strength large hexagon head bolt combination screws for steel structure, mainly used for railway and highway bridges, boiler steel structures, industrial plants, high-rise civil buildings, tower mast structures, hoisting machinery and their steel structures require friction-type high-strength bolt combinations Screw occasions. It is characterized by a bolt, also called a bolt, with a dodecagon at the end.
The following is the installation of hexagonal combination screws other than high-strength bolts for buildings and factories:
When installing, a special electric wrench must be used. There are two socket heads on the top and bottom. One is sleeved on the hexagon of the nut and the other is sleeved on the decagon of the outer hexagonal combination 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 hexagonal combination screw and the neck of the dodecagon are subjected to torsion shear to the neck After cutting, the installation is over. This torsion-shear type high-strength external hexagonal combination screw is a one-time use screw and generally cannot be removed after installation.