Release time：2020-01-16 18:44 Browse：
1. **Standard Adherence and Certification** - Comply with GB5789, a comprehensive Chinese standard that defines specifications for extended hexagonal flange bolts, ensuring compliance with national quality and safety regulations. This certification guarantees traceability and compatibility with other GB - compliant components. 2. **Enhanced Structural Design** - **Extended Shank**: The elongated shank provides flexibility for joining thick materials or multi - layer structures, eliminating the need for custom - length bolts. - **Large - Diameter Flange**: The hexagonal flange has a wider surface area than standard bolts, increasing contact with the mating surface to distribute pressure evenly and prevent indentation, especially in soft materials like aluminum or plastic. - **Serrated Underside**: Many models feature serrated teeth on the flange underside, biting into the surface to prevent rotation during tightening and act as a built - in lock washer. 3. **Thread Engineering** - **Thick Half - Threaded Profile**: The robust half - thread design concentrates clamping force in the threaded section, reducing stress on the unthreaded shank and optimizing load distribution. This is crucial for applications with high shear or tensile loads. - **Precision - Cut Threads**: Manufactured with precise thread pitches (e.g., M6, M8) to ensure consistent engagement with nuts or tapped holes, minimizing the risk of cross - threading during installation. 4. **Material and Corrosion Resistance** - **High - Strength Steel Core**: Constructed from medium - carbon steel or alloy steel grades (e.g., 4.8, 8.8, 10.9), offering tensile strengths ranging from 400 MPa to 1000 MPa for heavy - duty applications. - **Hot - Dip Galvanized Coating**: The galvanized finish provides multi - layer protection against rust and corrosion. It forms a sacrificial zinc layer that reacts with the environment before the base metal, extending the bolt’s lifespan in outdoor, marine, or industrial settings. 5. **Installation and User Benefits** - **Tool Compatibility**: Designed for use with standard hexagonal wrenches or socket tools, simplifying installation and reducing the need for specialized equipment. - **Time - Saving**: The integrated flange eliminates the need for separate washers, streamlining assembly processes and reducing inventory costs. - **Vibration Resistance**: The combination of the serrated flange and half - threaded design enhances resistance to loosening caused by vibrations, making it ideal for automotive engines, machinery, and construction equipment. 6. **Dimensional Versatility** - Available in a wide range of diameters (e.g., M5–M20) and lengths (from 20 mm to 200 mm), catering to diverse project requirements, from small - scale repairs to large - scale infrastructure projects. - Thread lengths can be customized to fit specific application needs, ensuring optimal engagement with mating components. 7. **Quality Control and Testing** - Undergo rigorous quality checks, including thread gauge inspections, hardness testing, and salt - spray corrosion tests, to meet or exceed industry standards. - Compliance with ISO 9001 quality management systems ensures consistent manufacturing processes and reliable product performance. 8. **Environmental and Safety Considerations** - The galvanized coating is compliant with environmental regulations (e.g., RoHS, REACH), minimizing hazardous substance exposure during use and disposal. - The bolt’s design reduces the risk of protrusion, enhancing safety in applications where personnel may come into contact with the fastened surface.
