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China Factory Suppliers of Hexagon Head Bolt, Spring Washer & Plain Washer Assemblies - Galvanized Steel Quality
| 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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Main Functions of Hexagonal Screw with Flat & Spring Washer Assembly
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1. Buffering Effect During mechanical operation, vibration, impact, or temperature changes can loosen screws or deform connecting parts. The cushioning effect of the elastic pad and flat pad effectively reduces these problems, increasing connection reliability.
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2. Locking Action The bolt-spring pad and flat pad lock the position of the connecting part, keeping it in the correct position and preventing movement due to external forces, ensuring tightness and stability of the connection.
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3. Reduce Connection Component Damage Connecting components often produce stress under screw connections. Adding elastic pads and flat pads helps bear these stresses, lightening the load on connecting parts and avoiding damage.
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4. Wide Application Fields Hexagonal screw elastic pad applications span construction, automotive, mechanical, electronic, and electrical industries. In daily life, they are also used in furniture assembly, electrical goods, and more.
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5. Specific Applications Hexagon head combination bolts are ideal for high-precision assembly and high-impact occasions. They are widely used in automobile body and engine installation, mechanical equipment maintenance, and connecting steel structures in construction.
Hexagon screw with flat and spring washer assembly is a versatile mechanical component primarily used to provide stable connection and buffering, and is widely applied across various industrial and civil fields.
❓ 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 consisting of a hexagon head bolt, a spring (elastic) washer, and a plain (flat) washer assembled together. This assembly provides secure, vibration-resistant connections in various mechanical and structural applications.
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What sizes are available for this bolt-washer assembly?
Standard thread sizes available include M3, M4, M5, M6, M8, M10, and M12. Each size has specific dimensions for height (H, h), outer diameter (dc), and inner diameter (d2) as defined by GB standards.
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What standards do these assemblies comply with?
The bolt dimensions follow GB 5783, while the washers conform to GB 9074.24 and GB 9074.26. Please note that M8, M10, and M12 H values may differ from the corresponding values in GB 9074.24-88.
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In which industries are hexagon head bolt assemblies commonly used?
These assemblies are widely used in the construction, automotive, mechanical, electronic, and electrical industries. Common applications include automobile body and engine installation, mechanical equipment assembly, steel structure connections, and everyday furniture or appliance assembly.
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Why is a spring washer used together with a plain washer in bolt assemblies?
The spring washer provides a locking and anti-loosening function by maintaining tension under vibration or impact, while the plain washer distributes the clamping load evenly and protects the surface of the connected parts. Together, they greatly improve connection reliability and longevity.
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Can I order these bolt assemblies directly from the factory?
Yes. We offer factory direct sales with genuine quality guarantees and competitive pricing. Whether you need standard sizes or bulk orders, we provide reliable supply and quality assurance for all our hexagon bolt and washer assembly products.