M4 M16 Carbon steel U shape bolt with nut washer Class4.8 grade 8.8 Zinc plating

U-shape bolts are primarily used in cargo vehicles to stabilize chassis and frame components, such as connecting steel plate springs. These versatile fasteners find applications in construction, mechanical parts connection, vehicles, ships, bridges, tunnels, and railways.

• Available in multiple shapes: semi-circular, square right angle, triangle, oblique triangle
• Excellent material properties including high density, bending strength, impact toughness, and temperature resistance
• Manufactured from quality materials including carbon steel Q235A Q345B, alloy steel, and stainless steel
• Complies with national standard JB/ZQ4321-2006
• Zinc plating provides corrosion resistance and aesthetic appeal

U-bolts are essential in various industries including construction, machinery, automotive, aerospace, and new energy sectors. Their thermal tightening capability makes them suitable for applications where internal temperatures exceed 200℃, ensuring secure fastening even under thermal expansion conditions.

With growing environmental awareness, our U-bolts are produced using eco-friendly materials and processes to minimize energy consumption and emissions, supporting sustainable development goals.

The zinc plating process creates a protective coating that significantly enhances corrosion resistance. As an amphoteric metal, zinc forms a protective carbonate film in humid conditions. The electroplating process deposits a uniform zinc layer that provides both functional protection and aesthetic appeal, making it ideal for fasteners used in demanding environments.

Available packaging options include small packing, carton packing, and pallet configurations to meet various shipping and storage requirements.