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High-Quality Fasteners Today
CNXD
Your Trusted Automotive Fastener Factory
As a China auto fastener manufacturer, CNXD produces high‑performance bolts, nuts, washers, circlips, CNC parts, keys, and aftersales fasteners for global OEMs. Our modern 33,000㎡, 50‑acre factory integrates automated production and inspection, backed by IATF 16949, ISO 14001, and ISO 45001 certifications.
With over 50 advanced testing devices and 100% inspection, we guarantee reliable, durable fastening solutions. For automotive, energy, and heavy machinery industries, CNXD delivers not just products, but confidence in every fastener supplied.
- Supplying 30+ Automotive Brands
- 20 Million+ Bolts Delivered Annually
- 50+ Quality Control Checkpoints
- Zero-Defect Quality Commitment
Strategic Warehouses
Product Variants
Automated Production Lines
Skilled Employees
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Innovations in High‑Strength
Fastener Manufacturing
Whether facing high‑stress automotive assembly or harsh energy environments, our innovations deliver high‑strength, corrosion‑resistant fasteners with precision engineering and full quality assurance.
Corrosion‑Resistant Alloy Materials
Over 10+ high-performance alloys developed for EV, oil & gas, and wind energy applications, including duplex stainless steel, titanium alloys, and nickel alloys.
These materials endure temperatures up to 600°C, resist corrosion over 500 hours in salt spray tests, and maintain structural integrity under high stress, ensuring long-term reliability in harsh industrial environments.
Advanced Surface & Heat Treatment
CNXD offers complete surface treatments—including electro-galvanizing (color, blue, white passivation), Dacromet, zinc diffusion, zinc-nickel, phosphating, black/blue oxidation, and chrome plating—for durable, corrosion-resistant fasteners.
These processes improve surface hardness by 20–40%, extend service life by 30%+, and reduce maintenance costs in automotive, energy, and heavy machinery sectors.
In‑House Mold Development
Over 200 custom molds are produced annually, supporting prototyping cycles as short as 7–10 days.
Advanced CAD/CAM design ensures ±0.01 mm tolerance control, enabling rapid iterations and reducing product-to-market time by 25%, while maintaining consistent quality for both OEM and aftermarket fasteners.
Automated Quality Inspection
Leveraging 50+ precision inspection devices, including CMM, hardness testers, tensile machines, torque testers, and metallographic analyzers.
100% inspection or statistically validated sampling guarantees tolerances within ±0.005 mm, hardness between 20–60 HRC, tensile strength exceeding 800 MPa, and full traceability through PPAP III and FMEA documentation.
Eco-Friendly Fastener Production
Commitment to Low-Carbon Fastener Innovation
Choose CNXD for greener fastening solutions: 20% energy-optimized production, carbon reduction, eco-friendly treatments, 80% recyclable materials, and solar-powered processes—helping your projects meet sustainability targets while enhancing brand value and compliance worldwide.
