Engineered specifically for the rigorous demands of intensive busbar trunking systems, this double head torque bolt delivers an unyielding mechanical fastening solution. In modern power distribution networks, the integrity of every connection dictates the efficiency of the entire grid. Our bolts are designed to maintain precise, unwavering contact pressure across insulation joints, effectively eliminating the micro-gaps that lead to electrical arcing and energy loss.
Manufactured from premium-grade steel, specifically formulated to meet 10.9S and 8.8 class classifications, the core structure exhibits extraordinary tensile strength and shear resistance. The metallic density of the forged steel ensures structural integrity, preventing dangerous elongation even when subjected to severe thermal cycling, heavy electrical loads, or continuous vibrational stress within industrial environments.
The intelligent double head mechanism is the defining feature of this fastener. It is precisely engineered to shear off at a strict predefined torque range of 70 to 90 N.M. During installation, technicians experience a distinct tactile and auditory snap as the outer head breaks away. This immediate physical feedback provides foolproof confirmation that the optimal clamping force has been achieved, completely eliminating the guesswork, the risk of under-tightening, or the potential for structural deformation caused by over-torquing.
Externally, each bolt is coated with a meticulously applied yellow or white galvanized finish. This surface treatment provides a smooth, visually distinct, and highly durable corrosion-resistant barrier. It seals the underlying high-strength steel against ambient moisture, harsh chemical exposure, and galvanic corrosion, ensuring long-term reliability even in damp or demanding electrical installation environments.
To facilitate precise integration into your existing electrical infrastructure, we have detailed our standard dimensional parameters below. Each metric—from the specific class rating to the exact thread length—is meticulously calibrated to align with heavy-duty industrial power transmission requirements. The standardized M12 threading ensures a secure, vibration-proof fit for standard square nuts, while the optimized thread lengths accommodate varying busbar thicknesses. Please reference the exact torque force and material class to ensure compatibility with your specific engineering blueprints.
Model | Class | Size of Square Nut | Thread Length | Torque Force | Color |
M12*115 | 8.8 | 30*30mm/27*27mm | 45~65mm | 70 ~90 N.M | Yellow/White Galvanized |
M12*120 | 8.8 | 30*30mm/27*27mm | 45~65mm | 70 ~90 N.M | Yellow/White Galvanized |
M12*125 | 8.8 | 30*30mm/27*27mm | 45~65mm | 70 ~90 N.M | Yellow/White Galvanized |
M12*130 | 8.8 | 30*30mm/27*27mm | 45~65mm | 70 ~90 N.M | Yellow/White Galvanized |
While our standardized models—ranging from M12x115 to M12x130—cover a comprehensive spectrum of standard installation requirements, we recognize that complex, large-scale engineering projects frequently demand highly tailored fastening solutions. Operating as a primary source manufacturer, we possess the internal capabilities to offer extensive customization services without compromising on lead times or structural integrity. Project engineers and procurement specialists can specify exact square nut dimensions (such as the standard 30x30mm or 27x27mm variants), unique thread lengths tailored to proprietary busbar architectures, and specific galvanized color finishes to match internal color-coding standards.
To guarantee that every custom and standard unit performs flawlessly under immense electrical and mechanical stress, our production facility enforces a rigorous, multi-stage quality control protocol:
Beyond the manufacturing floor, our dedicated technical support team provides comprehensive guidance spanning from initial blueprint integration and material selection to on-site installation troubleshooting. We ensure that your procurement process is backed by transparent communication, rapid prototyping for custom dimensions, and highly reliable delivery schedules.
The fundamental reliability of any commercial or industrial power distribution system relies heavily on the microscopic stability of its mechanical connections. Our double head torque bolts are purposefully engineered for integration into intensive busbar trunking systems, heavy-duty electrical insulation joints, and critical switchgear assemblies.
When deploying these specialized fasteners into commercial high-rises, sprawling industrial manufacturing plants, or high-density data center power grids, the precise mechanical clamping force ensures that the copper or aluminum busbar conductors maintain maximum surface area contact. This optimized physical connection minimizes electrical resistance, prevents the formation of localized thermal hotspots, and significantly extends the operational lifespan of the entire electrical infrastructure.
Furthermore, the straightforward installation process dramatically reduces labor hours on complex job sites. Because the bolt self-regulates its clamping force, installation crews require no specialized, frequently calibrated torque wrenches. Once the outer head shears off at the engineered threshold, the remaining low-profile inner head remains permanently secured. This compact final profile allows for tighter spacing within restrictive busbar enclosures, optimizing the overall footprint of the electrical distribution system while maintaining absolute structural security.
