Hebei Yuetong Fasteners Manufacturing Co., Ltd. presents the high-performance DIN 603 Carbon Steel Carriage Bolt, specifically engineered for applications requiring a smooth, domed head and a square neck to prevent rotation during installation. These galvanized white zinc bolts offer a superior balance of structural strength and corrosion resistance, making them an ideal choice for automotive, construction, and industrial woodworking projects.
Manufactured in China's largest fastener production base since 1991, our Carriage Bolts are produced using advanced equipment and high-quality iron. With available grades of 4.8, 6.8, and 8.8, these half-thread fasteners provide the versatility needed for various tension and shear requirements, ensuring a secure and professional finish for every assembly.
Detailed Parameters
| Product Standard | DIN 603 | Material | Carbon Steel |
|---|---|---|---|
| Surface Treatment | Zn-Plated (White Zinc) | Grade | 4.8 / 6.8 / 8.8 |
| Size Range | M6 - M20 | Thread Type | Half Thread |
| Measurement | Metric | MOQ | 1 Ton |
| Delivery Time | 15-30 Days | Shipping Port | Tianjin Port |
Key Advantages
Corrosion Resistance
Premium white zinc plating provides an effective barrier against oxidation and rust in various environments.
Proven Durability
Leveraging over 30 years of manufacturing expertise since 1991 to ensure long-term structural integrity.
Grade Versatility
Available in 4.8, 6.8, and 8.8 steel grades to meet specific load-bearing and industrial requirements.
Precision Fit
Strict adherence to DIN 603 standards ensures seamless compatibility with matching nuts and washers.
Smooth Aesthetics
Bright, uncoated finish and a domed head provide a clean, professional look for exposed fasteners.
Custom OEM Support
As a direct manufacturing factory, we provide flexible OEM services to meet your unique specifications.
Product Gallery
Management Platforms
Raw Material Control
Sourcing high-quality iron and carbon steel to ensure the base strength of every bolt.
Advanced Production
Utilizing several sets of advanced equipment for high-precision threading and forming.
Quality Assurance
Strict monitoring of the Zn-plating process to guarantee uniform corrosion protection.
Modern Management
Adopting modern industrial management systems to reduce lead times and improve efficiency.
Logistics Optimization
Strategic location near Tianjin Port for fast and cost-effective global shipping.
Global Distribution
Extensive export experience to Southeast Asia, Europe, and other international regions.
Investment Return Comparison
| Feature | Standard Fasteners | Yuetong DIN 603 |
|---|---|---|
| Material Grade | Basic 4.8 | Custom 4.8 / 6.8 / 8.8 |
| Coating Quality | Standard Zinc | High-Grade White Zinc Plated |
| Production Origin | Generic Workshop | Specialized Fastener Center |
| Lead Time | Variable | Consistent 15-30 Days |
| Price-to-Quality | Average | Factory-Direct Value |
Frequently Asked Questions
DIN 603 carriage bolts feature a smooth domed head and a square neck, which prevents the bolt from turning while the nut is tightened, eliminating the need for a wrench on the head side.
Grade 8.8 bolts have a higher tensile strength and yield point than grade 4.8, making them suitable for heavy-duty structural applications where higher load capacity is required.
White zinc plating acts as a sacrificial coating that prevents the underlying carbon steel from reacting with moisture and oxygen, significantly reducing the risk of rust.
Yes, as a direct manufacturing factory, we offer full OEM support and can produce fasteners according to DIN, BSW, and ANSI standards based on your specific needs.
Our standard bulk packaging consists of high-strength bags secured on industrial pallets to ensure safety and stability during sea freight from Tianjin Port.
Our standard MOQ for factory wholesale is 1 Ton, though samples are available for quality verification before placing a full bulk order.
