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Galvanized Hexagon Head Bolt with Spring and Plain Washer Assemblies | China Suppliers & Factory
| Thread size d |
M3 | M4 | M5 | M6 | M8 | M10 | M12 | |
| h ② | Public | 0.5 | 0.8 | 1 | 1.6 | 1.6 | 2.0 | 2.5 |
| H | Public | 2 | 2.75 | 3.25 | 4 | 5 | 6.25 | 7.5 |
| dc | Public | 7 | 9 | 10 | 12 | 16 | 20 | 24 |
| d2 | Reference | 5.23 | 6.78 | 8.75 | 10.71 | 13.64 | 16.59 | 19.53 |
| a | Max | 1.0 | 1.4 | 1.6 | 2.0 | 2.5 | 3.0 | 3.5 |
| 1,000 pieces of steel weigh ≈ kg | - | - | - | - | - | - | - | |
| 1. Other size reference bolts: GB 5783; washers: GB 9074.24, GB 9074.26 2. M8, M10, M12 H values and GB 9074.24-88 corresponding values are not consistent |
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Key Functions of Hexagon Screw with Flat & Spring Washer Assembly
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1. Buffering Effect In the process of mechanical operation, due to vibration, impact or temperature changes and other reasons, the cushioning effect of the elastic pad and the flat pad can effectively reduce the problems of the loose screw or the deformation of the connecting parts, thus increasing the reliability of the connection.
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2. Locking Action The bolt-spring pad and the flat pad can lock the position of the connecting part, keep it in the correct position, and prevent movement due to external force, to ensure the tightness and stability of the connection.
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3. Reduce Connection Component Damage The connection component in bearing screw connections often produces stress. The bolt plus elastic pad and flat pad can bear these stresses, lighten the load of the connecting parts, thus avoiding damage to the connecting parts.
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4. Wide Application Fields Outside hexagon head screw elastic pad application fields are very wide — not only used in construction, automotive, mechanical, electronic, and electrical industries, but also in daily life for furniture assembly, electrical goods, and other applications.
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5. Specific Applications Hexagon head combination bolts are used for important assemblies requiring high accuracy and capable of withstanding larger impact forces. For example, in automobile manufacturing, they are widely used for body and engine installation. In mechanical equipment maintenance, they are used for connecting mechanical parts. In construction, they are used to connect steel structures.
Hexagon screw with flat cushion and spring washer is a kind of multi-functional mechanical part, which is mainly used to provide stable connection and buffering, and is widely applied across various industrial and civil fields.
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Frequently Asked Questions (FAQ)
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What is a hexagon head bolt with spring washer and plain washer assembly?
It is a combination fastener set consisting of a hexagon head bolt, a spring (elastic) washer, and a plain (flat) washer. This assembly is designed to provide secure, vibration-resistant connections in a wide range of mechanical and structural applications.
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What sizes are available for this bolt and washer assembly?
The assembly is available in standard metric thread sizes including M3, M4, M5, M6, M8, M10, and M12. Each size has corresponding dimensional specifications for washer height (h), total height (H), outer diameter (dc), and other parameters as listed in the specification table.
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What standards do these assemblies conform to?
These assemblies reference Chinese national standards: bolts follow GB 5783, and washers follow GB 9074.24 and GB 9074.26. Please note that M8, M10, and M12 H values may differ slightly from the corresponding values in GB 9074.24-88.
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In which industries are these assemblies commonly used?
These assemblies are widely used in construction, automotive, mechanical engineering, electronics, and electrical industries. They are also commonly found in daily-life applications such as furniture assembly and household electrical appliances.
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Why is it important to use both a spring washer and a plain washer together?
Using both washers together provides a combined benefit: the spring washer offers locking and anti-loosening properties under vibration, while the plain washer distributes the clamping load evenly across the surface, protecting the connected parts from stress damage and deformation.
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Do you offer factory direct pricing and quality guarantees?
Yes. We offer factory direct sales with competitive pricing, ensuring genuine products with full quality assurance. Every assembly is manufactured to meet strict dimensional and material standards, providing reliable performance for your applications.