Release time：2020-01-16 18:44 Browse：
### 1. **High-Strength Construction & Material** - **Premium Materials**: Crafted from high-tensile steel alloys (e.g., 8.8, 10.9, or 12.9 grade), with 12.9 grade offering exceptional tensile strength (≥1200MPa) and yield strength (≥1080MPa). These materials undergo heat treatment (quenching and tempering) to enhance hardness, durability, and resistance to shear or tensile stress—critical for heavy-duty applications where bolts must withstand extreme loads. - **Strength Certifications**: Compliant with international standards (e.g., ISO 898-1, DIN 931/933) to ensure consistent performance, making them reliable for structural, industrial, or automotive use where failure could lead to safety risks. ### 2. **Outer Hexagon Head Design** - **6-Sided External Profile**: The outer hexagon head features precise flat sides and a standardized height/diameter ratio, compatible with common wrenches, sockets, and power tools (e.g., impact drivers). This design allows for high-torque installation, ensuring tight clamping in demanding assemblies (e.g., machinery frames, bridge components). - **Practical Advantages**: The hex head minimizes slippage during tightening, reducing the risk of stripped heads—a key benefit in high-volume production or field repairs. Its robust structure also resists deformation under excessive torque, maintaining integrity in heavy-load scenarios. ### 3. **Lengthened Shank: Purpose & Applications** - **Extended Length Feature**: The "lengthened" shank (non-threaded or partially threaded section) is longer than standard bolts, designed to penetrate thick materials, multi-layered components, or deep-set holes. For example, M12 lengthened bolts may reach 100mm+ in total length, suitable for securing thick steel plates, structural brackets, or large machinery parts. - **Versatile Reach**: Ideal for scenarios where standard-length bolts are too short, such as: - Fastening heavy-duty equipment to concrete or metal foundations. - Securing multi-part assemblies (e.g., industrial conveyor frames, automotive chassis components). - Connecting thick substrates (e.g., shipbuilding, construction steelwork). ### 4. **Thread Options: Whole Tooth vs. Half Tooth** - **Whole Tooth (Full Threads)**: The entire shank (from head to tip) is fully threaded, maximizing engagement with nuts or tapped holes. This design delivers superior grip and clamping force, making it ideal for applications requiring uniform tension (e.g., flange connections, fixed joints in machinery). - **Half Tooth (Partial Threads)**: Only the lower portion of the shank is threaded, with the upper section remaining smooth. The unthreaded shank enhances shear strength, as the solid metal resists lateral forces better than threaded sections. This option is preferred for dynamic or vibration-prone environments (e.g., engine mounts, heavy vehicle suspensions). ### 5. **Size Range: M4 to M24** - **Metric Dimensions**: Available in a broad range of metric sizes, from small (M4, M5) to large (M20, M24), with corresponding thread pitches (e.g., M4×0.7, M10×1.5, M24×3). This versatility covers diverse needs: - Small sizes (M4-M8): Suitable for light industrial use (e.g., equipment panels, electrical enclosures). - Medium to large sizes (M10-M24): Designed for heavy loads (e.g., construction steel, mining machinery, offshore structures). - **Precision Threading**: Threads are rolled (not cut) to ensure smooth, consistent profiles, reducing friction during installation and enhancing engagement with nuts—critical for maintaining clamping force over time. ### 6. **Key Applications** - **Industrial Machinery**: Securing frames, gears, and hydraulic components in manufacturing equipment, presses, or turbines, where high strength and lengthened reach are essential. - **Construction & Infrastructure**: Fastening steel beams, concrete formwork, or bridge joints, leveraging their load-bearing capacity and extended length for thick materials. - **Automotive & Heavy Transport**: Used in truck chassis, trailer hitch assemblies, or engine mounts, where half-threaded options balance grip and shear resistance against road vibrations. - **Energy & Mining**: Reliable for securing drilling equipment, pipeline flanges, or power plant machinery, where durability under extreme conditions is non-negotiable. ### 7. **Standards & Compatibility** - **Universal Fit**: Manufactured to metric standards, ensuring compatibility with nuts, washers, and tapped holes from global suppliers—simplifying sourcing for international projects. - **Finish Options**: While not specified, common finishes (zinc plating, galvanization) may be available to add corrosion resistance, expanding usability in outdoor or humid environments (e.g., marine, construction sites). In summary, these bolts combine high strength, extended length, and versatile threading to meet the demands of heavy-duty, large-scale applications, backed by global standards for reliability and performance.
