M8 M12 Mild Steel U Shape metal Bolt with Nut Washer Grade 4.8 Zinc Plating Blue White
Product Specifications
| Attribute | Value |
| Usage | Fastening |
| Size | Various sizes available |
| Style | Steel U shape bolt with washer nut |
| Head Style | U shape bolt/U type bolt |
| Strength | High |
| Finish | Polished |
| Manufacturer | JIA SHAN Hardward Company |
| Length | Customizable |
| Package | Small Packing+Carton Packing+Pallet |
| Standard | DIN |
| Package Quantity | 100 pieces |
| Shape | U Bolt |
| Measurement System | INCH, Metric |
| Port | Shenzhen |
| Quality | Inspection before shipment |
| Color | Customizable |
| Material | Steel: 304/316/301/310/201 |
Product Description
U-shape bolts are commonly used in cargo vehicles to stabilize the chassis and frame, such as connecting steel plate springs. These bolts have wide applications in construction, mechanical parts connection, vehicles, ships, bridges, tunnels, and railways.
Available Shapes: Semi-circular, square right angle, triangle, oblique triangle.
Material Properties
- Density, bending strength, impact toughness, compression strength
- Modulus of elasticity, tensile strength, temperature resistance
- Color customizable based on usage environment
Common Materials: Carbon steel Q235A, Q345B, alloy steel, stainless steel (201, 304, 321, 304L, 316, 316L)
National Standard: JB/ZQ4321-2006
Mild steel is the most common structural steel, with a low carbon content (usually ≤0.25%), good weldability, ductility and cost advantages, but with poor corrosion resistance and usually requiring surface treatment (e.g. galvanising, painting).
Carbon Content 0.05% - 0.25
Tensile strength 400 - 550 MPa (typical 400 MPa)
Yield strength 250 - 400 MPa
Elongation 20% - 25% (highly ductile)
Magnetism Yes (ferromagnetic)
Poor corrosion resistance, requires galvanising, painting or coating for protection
Weldability Excellent
Cost Low
Material Composition
| No. | C% | Cr% | Ni% | Mo% |
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
| 304L | 0.03 | 18-20 | 8-12 | / |
| 316L | 0.03 | 16-18 | 10-14 | 2-3 |
| 321 | 0.08 | 17-19 | 9-12 | / |
Applications
U-bolt heat tightening is suitable for applications where internal temperature exceeds 200℃ in equipment and pipelines. This process compensates for thermal expansion to maintain proper sealing.
Environmental Considerations
With growing environmental awareness, the U-bolt industry focuses on using eco-friendly materials and processes to reduce energy consumption and emissions, contributing to sustainable development.
Zinc Plating Advantages
Zinc plating provides excellent corrosion resistance for steel substrates. The protective properties depend on plating thickness, and passivation treatment enhances both protection and appearance.
Manufacturing Facility
Packaging
