I. Core Solution
Our fastener products effectively address the three major pain points of automotive nuts and bolts: easy loosening, corrosion, and insufficient load-bearing capacity. They are compatible with all vehicle categories, including passenger cars, commercial vehicles, and new energy vehicles (battery electric & hybrid), covering critical components such as engines, chassis, body structures, and wheel hubs. Every delivered product has passed specialized automotive industry testing to meet both high-strength fastening and long-term corrosion resistance requirements.
II. Core Product Range
Material Selection: Manufactured from Grade 10.9 / 12.9 high-strength alloy steel and special carbon steel, with quenched and tempered heat treatment. Tensile strength ≥ 1040MPa, yield strength ≥ 940MPa, enabling resistance to high-frequency vibration and heavy-load impact during vehicle operation, eliminating risks of bolt fracture and deformation.
Key Advantages: Featuring high strength, superior toughness, and excellent fatigue resistance, these bolts are ideal for critical load-bearing components including engine blocks, connecting rods, wheel hubs, and chassis suspensions. They satisfy stringent automotive industry strength standards and maintain stable performance without deformation or breakage over long service life.
Common Specifications: Hex socket bolts, flange bolts, wheel hub bolts, and automotive-specific countersunk bolts. Custom sizes and thread pitches are available per original equipment standards including ISO, DIN, GB, and automotive-specific specifications.
Material Selection: Paired with high-strength bolts, these nuts use Grade 8 / 10 alloy steel and 304 / 316 stainless steel, with material strength precisely matched to bolts to prevent thread stripping or cracking caused by uneven stress.
Key Advantages: Combining high-strength matching with multi-layer corrosion protection, the nuts integrate built-in locking structures (nylon insert, serrated anti-slip design) to deliver both corrosion resistance and secure locking performance, preventing loosening, rusting, and seizing during vehicle operation.
Common Specifications: Hex lock nuts, flange lock nuts, wheel hub nuts, and self-locking nuts. They fit various automotive bolts and adapt to diverse assembly space requirements.
Engineered for harsh automotive environments including outdoor operation, high engine temperatures, and chassis exposure to moisture, rainwater, and mud, our multi-layer coating systems ensure long-term rust prevention.
Premium Corrosion Protection: Dacromet / Geomet coating with salt spray resistance exceeding 1000 hours and no risk of hydrogen embrittlement. Suitable for long-exposed components such as chassis and wheel hubs, resisting moisture and mud corrosion.
Standard Corrosion Protection: Hot-dip galvanizing and electro-galvanizing (blue-white / color galvanized), with salt spray resistance of 200–500 hours. Cost-effective for body and interior parts with low stress and low corrosion risk.
Specialized Protection: Stainless steel passivation and Teflon coating, designed for high-temperature engine areas and NEV battery compartments, combining corrosion resistance with high-temperature tolerance and electrical insulation.
III. Core Strengths
All products are manufactured to automotive high-strength standards and tested for tensile, torsional, and fatigue resistance. They withstand vibration, heavy loads, and extreme temperature fluctuations, eliminating safety hazards such as bolt breakage and thread stripping for critical engine and chassis applications.
Multiple anti-corrosion finishes are available, with customized solutions tailored to corrosion risks across different vehicle parts. This solves traditional issues of rust, seizing, and difficult disassembly, extending service life and reducing after-sales maintenance costs.
Suitable for passenger vehicles, commercial vehicles, and new energy vehicles. Custom production is available per original equipment drawings and specifications, compatible with various automotive assembly requirements. Products comply with GB, DIN, ANSI, and other international standards to meet global automotive OEM and aftermarket demands.
Nuts feature integrated locking designs (nylon insert, serrated flange, anti-slip serrations), while bolts use precision-engineered threads with controlled torque application. These features effectively resist high-frequency vehicle vibration, ensuring permanent fastening stability and improved overall vehicle safety.
Full-process quality management covers raw material inspection, dimensional accuracy testing, mechanical property verification, and salt spray testing. Third-party test reports from SGS, BV, etc., are available. Products conform to ISO/TS 16949 automotive quality management system with full quality traceability.
IV. Application Scenarios
Engine System: Fastening for cylinder blocks, connecting rods, camshafts, valve covers, etc., with high temperature resistance, high strength, and corrosion protection.
Chassis System: Fastening for suspensions, steering systems, brakes, and wheel hubs, providing vibration resistance, anti-loosening, and long-term corrosion protection for complex road conditions.
Body System: Fastening for body frames, doors, trunks, etc., with aesthetic appeal, corrosion resistance, and adaptability to lightweight design requirements.
New Energy Vehicles: Fastening for battery compartments, motors, and electronic control systems, combining high strength, corrosion resistance, and insulation for NEV-specific operating conditions.
Aftermarket Maintenance: OEM-spec replacement parts for automotive repair and maintenance, offering easy installation and consistent performance with original components.
V. One-Stop Service Support
Specification Selection: Professional application guidance based on vehicle models and installation positions, recommending optimal high-strength and anti-corrosion fasteners.
Non-Standard Customization: Custom nuts and bolts per OEM drawings, samples, with special dimensions, materials, and anti-corrosion treatments available.
Sample Provision: Free samples for testing and validation before mass production to ensure product performance meets customer requirements.
Quality Assurance: Replacement and return services for quality defects, supported by comprehensive after-sales technical support for installation and application issues.
Foreign Trade Support: Full export customs clearance documentation, with sea and air freight options available to fulfill global automotive procurement needs.
We specialize in the R&D and manufacturing of automotive-grade fasteners, focusing on high strength and long-term corrosion protection. We provide integrated fastening solutions for automotive manufacturing, component supply, and aftermarket maintenance, helping customers improve product reliability and reduce overall operational costs.