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Ningbo Zhongli Bolts Manufacturing Co., Ltd. founded in 2003, is a professional manufacturer of high-strength fasteners in different specifications for various models, which is covering an area of about 10,000 square meters, registered capital of 1500,000 RMB, with the total annual productivity of 8,000 tons per year. The company has set up several sales branches in different provinces in China. Meanwhile, the company’s products are exported to Europe, USA, Middle East, Africa, Southeast Asia and other regions.
In the vast field of industrial engineering, bolts, though small, play a crucial role in connecting everything. As a core member of fasteners, hexagonal bolts, with their unique structural design, outstanding mechanical properties and wide range of application scenarios, have become the “invisible guardians” in industries such as mechanical equipment, construction engineering and automotive manufacturing.
1. Hexagonal head bolts: The universal choice for basic modelsAs the most classic type of hexagonal bolt, hexagonal head bolts are divided into two major camps: external hexagonal and internal hexagonal. Hexagon socket bolts apply force through a hexagon wrench and are suitable for occasions with ample space. Hexagon socket bolts, with their countersunk head design, have shone brightly in space-constrained electronic devices and precision instruments. Its core advantage lies in the synergistic effect of standardized threads and hexagonal heads, which can not only withstand axial tensile force but also resist lateral shear force. In mechanical equipment with high assembly accuracy requirements and frequent vibrations, hexagonal head bolts can effectively prevent the loosening of connecting parts by controlling the preload force, ensuring long-term stable operation.
2. Hexagonal head flange bolts: Industrial guardians with high preloadHexagonal head flange bolts add flange plates on the basis of traditional hexagonal heads, significantly increasing the ratio of the support area to the stress area. This design enables it to withstand higher preload forces while enhancing anti-loosening performance. In dynamic load scenarios such as automotive engines and heavy machinery, flange bolts disperse stress to prevent thread failure caused by local overload. For instance, in the connection of excavator booms, the anti-loosening property of flange bolts can effectively cope with frequent impact and vibration, thereby extending the service life of the equipment.
3. Square head Bolts: Reliable partners for rough structures
Square head bolts stand out in rough structural connections with their prominent square head design. Its larger force-bearing area makes it easier for the wrench to get stuck. Meanwhile, its position can be adjusted through the T-slot, making it suitable for scenarios such as steel structures and woodworking machinery. In the fixation of building formwork, the anti-rotation feature of square head bolts can prevent thread wear caused by frequent disassembly and improve construction efficiency. In addition, its cost advantage makes it an ideal choice for temporary support structures.
4.Round head Bolts: An elegant choice for smooth surfacesRound head bolts, with their streamlined head design, are widely used in fields such as medical devices and electronic equipment where extremely high surface smoothness is required. Its semi-round head and square neck variant can embed the head into the metal groove, reducing the protrusion height. The large round head design is suitable for wooden parts. In the assembly of office equipment, the concealed installation feature of round head bolts not only ensures functional requirements but also takes into account aesthetics. In addition, its impact resistance makes it an ideal choice in vibrating environments.
5. Countersunk Bolts: Invisible Guardians of Flat SurfacesCountersunk bolts, with their heads fully submerged in the connecting parts, achieve a smooth surface and are suitable for scenarios such as electronic products and kitchen equipment where both aesthetics and functionality are emphasized. In the installation of building curtain walls, countersunk bolts can prevent the protruding parts from interfering with the glass panels. In outdoor facilities, its anti-rust treatment can effectively cope with damp environments. Through reasonable selection, countersunk bolts can ensure the connection strength while enhancing the industrial design level of the overall product.
6. Live joint Bolts: A flexible solution for frequent disassembly and assemblyWith its unique joint design, the live joint bolt has become a powerful tool for scenarios that require frequent disassembly and assembly, such as high-pressure valves and oil drilling and production equipment. Its rotating function simplifies the installation process and enables quick adjustment of pipe connection angles in fluid engineering. For instance, in the maintenance of oilfield equipment, the rapid disassembly and assembly feature of live joint bolts can significantly reduce downtime and enhance production efficiency. The selection of materials should take into account both corrosion resistance and strength to cope with complex working conditions.
7. T-bolts: An Innovative Approach for Single-sided Connections
The T-bolt is specially designed for single-sided connection scenarios. After being inserted into the T-slot, it rotates 90° to achieve automatic positioning. In the fixation of glass curtain walls and the connection of railway sleepers, its compact structure avoids the space waste of traditional bolts. In automated production lines, the rapid installation feature of T-bolts enhances the efficiency of tooling. The material needs to have high tensile strength to withstand dynamic loads.
8. U-bolt: A flexible bridge for pipe fixationU-bolts, with their U-shaped structure, have become a flexible solution for fixing pipes and cables. In bridge construction, its adjustable feature ADAPTS to pipes of different diameters. In shipbuilding, its corrosion-resistant design should be adapted to the Marine environment. Through reasonable selection, U-bolts can ensure the reliability of the connection while absorbing a certain degree of vibration.
9. Anchor bolts: The anchors used to fix the foundation stones
Anchor bolts, as the connecting link between equipment and foundations, play a crucial role in scenarios such as heavy machinery and generator sets. The embedded design needs to take into account the balance between the strength of concrete and the pull-out force of bolts. In the installation of wind turbine generators, the long-term stability of anchor bolts is directly related to the safety of the equipment. Its anti-corrosion treatment needs to be optimized for the soil environment.
10. Hexagonal Head Bolts with Holes: The intelligent shield for Locking and anti-loosening
Hexagonal head with holes bolts achieve locking and anti-loosening by setting holes on the head or the screw and cooperating with pins. In construction machinery with intense vibration, its anti-loosening performance is significantly better than that of ordinary bolts. For instance, in the connection of crane booms, perforated bolts can effectively prevent thread loosening caused by vibration, ensuring operational safety.
Selection logic: From demand to solution
Load analysis : Select the strength grade of the bolt based on the type of force (tensile, shear, composite).
Environmental adaptability : consider the influence of temperature, humidity and corrosive media on the material.
Installation conditions : evaluate space limitations, tool accessibility and disassembly and assembly frequency.
Cost-effectiveness : Balance performance requirements with procurement costs and avoid overdesign.
Conclusion: A small bolt, great wisdom
In the era of Industry 4.0, the intelligent development of hexagonal bolts is becoming a new trend. From traditional fasteners to intelligent connection systems, every breakthrough in bolt technology is driving a leap in engineering efficiency. Choosing the right type of hexagonal bolt is not only a technical decision but also a commitment to the quality of the project. Let’s take a more professional perspective to examine the design philosophy behind these “industrial teeth” and jointly build a safer and more efficient engineering world.
Media Contact
Company Name: Ningbo Zhongli bolts manufacturing Co., Ltd.
Email: Send Email
Phone: +86-574-86587617, +8615257861940
Address:Tiangu Industrial Zone, Jiulonghu Region
City: Ningbo
State: Zhejiang
Country: China
Website: https://www.cnzyl.com/