The head of the Cup head square neck bolt with large head is larger than that of the ordinary cup head bolt. It is shaped like a large cup and can cover a larger area. The lower part is connected to a square neck, and further down is a threaded screw.
They are often used in the heavy machinery manufacturing industry, where various heavy parts need to be connected when manufacturing large cranes. The large head can better distribute the pressure between the parts, and the square neck ensures that the bolt will not shift when tightened, thus ensuring that all parts are firmly connected and will not loosen or fall off when the crane is lifting heavy objects.
The square neck of bolt is very special. When installing, make a square groove on the material that matches the square neck. After inserting the bolt, the square neck will be firmly clamped in the groove. When tightening the nut, the bolt will not rotate. Workers can tighten the nut with one hand, which improves the installation efficiency and makes the connection more firm and reliable.
Cup head square neck bolt can be used to connect bridge bearings. Bridges bear the weight of vehicles and the vibrations during driving, so the connections of the bearings must be stable. The large end enables the bearing to better fit the bridge structure and evenly transmit pressure. The square neck prevents the bolts from rotating under the action of vehicle loads, ensuring the safe operation of the bridge.
The characteristics of Cup head square neck bolt are "stable fixation and strong force bearing". It has a larger contact area with the fixed material, and the pressure is more evenly distributed, making it less likely to damage or deform the material. The square neck is clamped in the pre-drilled groove. When the nut is tightened, the bolt will not rotate along, making the installation time-saving and labor-saving. Moreover, it is strong and durable, capable of withstanding considerable tensile and compressive forces.