English
中文简体The GB4231 U-Bolt is a standardized fastener compliant with China's national specifications, engineered to secure cylindrical or tubular components in demanding environments. Widely used in automotive systems, such as heavy-duty truck chassis and commercial vehicle suspension systems, its U-shaped design ensures robust clamping force to withstand vibrations, shocks, and dynamic loads. Constructed from carbon steel or alloy steel, it undergoes surface treatments like zinc plating or Dacromet coating to resist corrosion and abrasion, making it ideal for harsh conditions like salt spray or humidity.
The GB4231 U-Bolt features calibrated threading and a radius-optimized U-bend, minimizing stress concentration and metal fatigue—critical for automotive parts exposed to constant motion. In commercial vehicles, it is integral to fixing rear axle leaf springs, directly impacting load-bearing safety and stability. Standardized dimensions ensure compatibility with OEM components, while customizable options (diameter, length, coating) address specialized automotive aftermarket needs.
Designed for Ease of Use:
Our GB4231 U-Bolts are engineered for straightforward and efficient integration into your assembly processes:
- Standardized Dimensions: Compliance with national GB4231 specifications ensures seamless compatibility with Original Equipment Manufacturer (OEM) components, simplifying installation and maintenance.
- Calibrated Threading: Precision-engineered threads allow for consistent and accurate tightening, ensuring optimal clamping force and joint integrity.
- Optimized U-Bend Radius: The carefully designed U-bend facilitates easy alignment and installation around cylindrical or tubular components, minimizing installation complexities.
- Readily Available: Stocked in standard sizes to meet immediate demands for common applications.
Key Advantages for Your Applications:
- Robust Clamping Force: U-shaped design provides secure fastening against vibration and shock.
- Exceptional Corrosion Resistance: Zinc plating and Dacromet coating ensure longevity in harsh environments.
- Minimized Stress Concentration: Radius-optimized U-bend reduces metal fatigue for enhanced durability.
- Guaranteed OEM Compatibility: Standardized dimensions ensure seamless integration with existing systems.
- Customizable Options: Available in various diameters, lengths, and coatings to meet specialized aftermarket needs.
- Enhanced Safety and Stability: Critical for securing load-bearing components in commercial vehicles.
- Long-Term Reliability: Engineered for consistent performance and extended service life.
Ideal for:
- Heavy-duty truck chassis systems
- Commercial vehicle suspension systems (leaf spring mounting)
- Securing exhaust systems and pipes
- Industrial machinery and equipment
- Agricultural vehicles
- Marine applications
- Any application requiring robust clamping of cylindrical or tubular components
| Product name | Standard | Material | Diameter | Length |
| U - Bolt | JB/ZQ 4321—97 | Steel (not specified in detail in ref2, can be various types as per common use) | M6 - M64 | Length is not strictly fixed, can be various values as per needs 2 |
| (for reference, as it's mentioned for marking in search results) | Zinc - Plated (for surface - treated ones as per marking example in ref2) | 1/4〃 - 2 - 1/2〃 2 | ||
| U - Bolt | No specific standard mentioned in ref4 (general market - based) | 304 Stainless steel 4 | M4, M5, M6, M8, M10, M12 4 | 14mm, 16mm, 18mm, 22mm, 25mm, 27mm, 32mm, 33mm, 38mm, 40mm, 42mm, 45mm, 48mm, 50mm, 51mm, 57mm, 60mm, 62mm, 63mm, 75mm, 76mm, 78mm, 89mm, 90mm, 100mm, 102mm, 108mm, 114mm, 120mm, 130mm, 133mm, 140mm, 150mm, 159mm, 168mm, 219mm 4 |
| U - Bolt | DIN3570 (mentioned in ref7) | Stainless Steel (303, 304, 316, 201), Carbon Steel (35 #, 45 #), Galvanized, Aluminum Alloy, Copper, Carbon Steel etc. 7 | M4 - M36 | Not specified in detail in ref7 for specific length values |
| 1/4" - 3" 7 |
