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China Suppliers Factory Galvanized Hexagon Head Combination Bolt with Spring Pad for Construction and Mechanical Equipment
| 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 |
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Key Applications of Hex Head Screw with Spring Pad Combination Bolt
- 🔧 Fixed Connection: The outer hexagonal screw is used for fixing the connection of two or more parts, widely used in electronics, electrical appliances, electrical power, furniture, chemical, water conservancy, ships and other industrial equipment and devices.
- 🛡️ Shock Absorption & Mitigation: The cushion, as an elastic component, can effectively reduce vibration and impact, preventing vibration and loose screws.
- 🔒 Prevent Loosening: In the case of vibration or shock, the elastic cushion can make the screws more stable and reduce the risk of looseness.
- 📐 Gap Adjustment: When the gap between the screw and the part needs to be adjusted, the spring pad can play the role of gap adjustment.
- 🔇 Noise Reduction: The spring pad can reduce the vibration of the connector, reduce noise, and improve overall comfort of use.
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The hexagonal outer screw belt cushion combination screw is widely used in the industrial field, especially in machining, assembly and maintenance. They help workers complete tasks more easily and are increasingly favored by consumers.
❓ Frequently Asked Questions
Q What is a hexagon head bolt with spring pad combination screw?
A hexagon head bolt with spring pad combination screw is a fastener assembly that integrates a hex head bolt with a spring (lock) washer. This combination provides secure fastening, vibration resistance, and anti-loosening performance in a single convenient unit.
Q What thread sizes are available for this combination bolt?
These combination bolts are available in standard metric thread sizes including M3, M4, M5, M6, M8, M10, and M12, covering a wide range of industrial and mechanical applications.
Q Why is galvanization used on these combination bolts?
Galvanization provides a protective zinc coating on the bolt surface, which significantly enhances corrosion resistance. This makes galvanized combination bolts ideal for use in humid, outdoor, or chemically exposed environments such as water conservancy and marine applications.
Q How does the spring pad prevent screws from loosening?
The spring pad acts as an elastic component that maintains constant tension between the bolt and the mating surface. Under vibration or dynamic loads, the spring washer compensates for any slight movement, keeping the assembly tight and reducing the risk of loosening over time.
Q In which industries are these combination bolts most commonly used?
These bolts are widely used across industries including electronics, electrical appliances, power generation, furniture manufacturing, chemical processing, water conservancy, shipbuilding, and general industrial equipment assembly and maintenance.
Q Can the spring pad combination bolt be reused after disassembly?
While the hex bolt itself can generally be reused if undamaged, it is recommended to replace the spring washer after disassembly. Repeated compression can reduce the elasticity of the spring pad, potentially diminishing its anti-loosening and vibration-dampening effectiveness.