New Products

Dacromet Wheel Bolts

Dacromet wheel bolts are highly corrosion-resistant fasteners specifically designed for wheel hub connections in passenger cars, commercial vehicles, and high-performance vehicles. These Dacromet wheel bolts are developed for conditions where wheel bolts bear high alternating loads, are extremely sensitive to hydrogen embrittlement, and are exposed to road salt spray and muddy environments. Traditional electroplated galvanized wheel bolts are at risk of hydrogen embrittlement fracture even at high strength grades, while Dacromet wheel bolts completely eliminate this risk through a hydrogen-free coating process. Furthermore, Dacromet wheel bolts have a uniform and aesthetically pleasing silver-gray appearance, excellent coating wear resistance, and maintain good rust prevention even after repeated disassembly and reassembly. Currently, Dacromet wheel bolts are adopted as original equipment by numerous joint venture and domestic brand automakers.

Product Description

Dacromet wheel bolts are highly corrosion-resistant fasteners specifically designed for wheel hub connections in passenger cars, commercial vehicles, and high-performance vehicles. These Dacromet wheel bolts are developed for conditions where wheel bolts bear high alternating loads, are extremely sensitive to hydrogen embrittlement, and are exposed to road salt spray and muddy environments. Traditional electroplated galvanized wheel bolts are at risk of hydrogen embrittlement fracture even at high strength grades, while Dacromet wheel bolts completely eliminate this risk through a hydrogen-free coating process. Furthermore, Dacromet wheel bolts have a uniform and aesthetically pleasing silver-gray appearance, excellent coating wear resistance, and maintain good rust prevention even after repeated disassembly and reassembly. Currently, Dacromet wheel bolts are adopted as original equipment by numerous joint venture and domestic brand automakers.

Product Feature

Zero Hydrogen Embrittlement Safety: Wheel bolts are typically grade 10.9 or 12.9, extremely sensitive to hydrogen embrittlement. The Dacromet coating process prevents hydrogen ion penetration throughout, eliminating the need for hydrogen removal and fundamentally eliminating the risk of delayed fracture.

Stable Torque Coefficient: The Dacromet coating has a stable coefficient of friction. Combined with a dedicated lubricant, it ensures the accuracy of preload during wheel bolt torque installation.

Wear and Scratch Resistance: The coating achieves high hardness after high-temperature sintering, making it less prone to scratches when mating with rim taper holes or flange surfaces during installation. Its corrosion resistance does not significantly decrease after repeated disassembly and reassembly.

Aesthetic Consistency: The uniform and aesthetically pleasing matte silver-gray surface, with no color difference, meets the requirements for overall vehicle appearance consistency.

Compatibility with Aluminum Wheels: The Dacromet coating eliminates the risk of galvanic corrosion when in contact with aluminum alloy wheels, avoiding the bimetallic corrosion problems associated with traditional galvanized bolts and aluminum wheels.