China Suppliers Factory Galvanized Hexagon Head Combination Bolts with Spring Pads for Construction and Mechanical Applications

Galvanized combination bolts, manufactured from high-quality galvanized steel, are essential components for connecting, securing, and supporting various elements in construction and mechanical projects. These bolts are designed to resist rust and corrosion, making them ideal for outdoor and wet environments. Commonly supplied by trusted China suppliers, galvanized composite bolts typically come with nuts, washers, and bolts, ensuring a complete fastening solution. They are widely utilized in steel structures, bridges, and heavy construction applications, making them a reliable choice for any construction factory aiming for durability and strength in their projects

Product Description

📊 Technical Specifications
Thread specifications (d) M3 M4 M5 M6 M8 M10 M12
a Max 1 1.4 1.6 2 2.5 3 3.5
H Max 2 2.75 3.25 4 5 6.25 7.5
dc Reference value 5.23 6.78 8.75 10.71 13.64 16.59 19.53
🛠️ Main Applications & Features
  • 🔧
    Fixed Connection: The outer hexagonal screw is used for secure fastening of multiple components, widely utilized in electronics, electrical appliances, power systems, furniture, and industrial machinery.
  • 🛡️
    Shock Absorption: As an elastic component, the spring pad effectively reduces vibration and impact, preventing components from loosening under dynamic loads.
  • 🔒
    Looseness Prevention: In high-vibration environments, the integrated elastic cushion ensures the screws remain stable, significantly reducing maintenance risks.
  • 📐
    Gap Adjustment: The spring pad allows for subtle adjustments in the gap between the screw head and the part, ensuring a precise fit.
  • 🔇
    Noise Reduction: By dampening the vibration of the connector, the combination bolt reduces operational noise and improves the overall user experience of the equipment.
💡 Product Summary: The hexagonal outer screw with cushion combination is an essential fastener in the industrial field, particularly for machining, assembly, and maintenance. Its design allows workers to complete tasks more efficiently and provides superior long-term reliability.
Frequently Asked Questions (FAQ)
What is a hexagonal screw with spring pad combination bolt?
It is a fastener assembly integrating a hex head bolt with a spring washer. The spring washer acts as an elastic component to prevent loosening, absorb vibration, and maintain a secure connection.
What thread sizes are available for this bolt?
These bolts are available in standard metric thread sizes, including M3, M4, M5, M6, M8, M10, and M12, suitable for a wide range of mechanical applications.
What industries commonly use these combination bolts?
They are widely used in electronics, electrical appliances, power generation, furniture manufacturing, chemical engineering, shipbuilding, and general industrial maintenance.
How does the spring pad prevent the screw from loosening?
The spring pad maintains constant pressure between the screw head and the part. Under vibration, it flexes to compensate for movement, keeping the screw firmly in place.
What is the surface treatment of these bolts?
These bolts are typically galvanized (zinc-coated) to protect against rust and corrosion, making them suitable for moist or chemically exposed environments.
Can the spring pad combination bolt be reused?
While the bolt itself is durable, it is recommended to replace the spring washer after repeated disassembly, as its elasticity may decrease over time, reducing its effectiveness.

Related Products