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China Galvanized Hexagon Head Combination Bolts Suppliers - Durable Spring Pad Factory for Construction and Steel Structures
Thread 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 of Hex Screw with Spring Pad Combination
- 🔩 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-induced loosening of screws.
- 🔒 Prevent Loosening: In cases of vibration or shock, the elastic cushion keeps screws more stable, significantly reducing the risk of looseness.
- ⚙️ Gap Adjustment: When the gap between the screw and the part needs to be adjusted, the spring pad plays a key role in precise gap adjustment.
- 🔇 Noise Reduction: The spring pad reduces vibration at the connection point, lowering noise levels and improving overall comfort during use.
The hexagonal outer screw with spring pad combination is widely used in the industrial field, especially in machining, assembly, and maintenance. They help workers complete tasks more easily and efficiently, and are increasingly favored by consumers across various industries.
❓ Frequently Asked Questions
Q
What is a hexagonal screw with spring pad combination bolt?
A hexagonal screw with spring pad combination bolt is a fastener assembly that integrates a hex head bolt with a spring (lock) washer. This combination provides both secure fastening and vibration resistance in a single pre-assembled unit, saving assembly time and improving reliability.
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 commercial fastening applications.
Q
Why is galvanization used on these combination bolts?
Galvanization provides a protective zinc coating that significantly enhances corrosion and rust resistance. This makes the bolts suitable for use in demanding environments such as outdoor installations, marine applications, chemical plants, and water conservancy projects.
Q
How does the spring pad prevent screw loosening?
The spring pad (lock washer) acts as an elastic component that maintains constant tension between the bolt head and the mating surface. When subjected to vibration or dynamic loads, the spring pad compresses and expands to keep the fastener tight, effectively preventing self-loosening.
Q
In which industries are these combination bolts most commonly used?
These bolts are widely used across electronics, electrical appliances, power equipment, furniture manufacturing, chemical engineering, water conservancy, shipbuilding, and general industrial machinery — essentially any sector requiring reliable, vibration-resistant fastening solutions.
Q
Can the spring pad combination bolt help with noise reduction?
Yes. The spring pad absorbs and dampens vibration at the fastening point, which in turn reduces mechanical noise generated by connected components. This feature is particularly valued in equipment where operational noise levels need to be minimized for comfort and performance.