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China Galvanized Hexagon Head Bolt Assemblies with Spring and Plain Washers - Reliable Suppliers and Factory Solutions
| 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 Hexagonal Screw with Spring Washer & Flat Washer Assembly
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🛡️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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🔒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, ensuring the tightness and stability of the connection.
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⚙️Reduce Connection Component Damage Connecting components bearing screw connections often produce 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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🌐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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🏭Specific Industrial Applications Hexagon head combination bolts are ideal for important assembly accuracy requirements and occasions withstanding larger impact forces. Widely used in automobile body and engine installation, mechanical equipment maintenance, connecting mechanical parts, and connecting steel structures in construction.
Hexagon screw with flat washer and spring washer is a kind of multi-functional mechanical part, which is mainly used to provide stable connection and buffer, and is widely used in various industrial and civil fields.
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❓ Frequently Asked Questions (FAQ)
Q What is a hexagon head bolt spring washer and plain washer assembly?
A hexagon head bolt spring washer and plain washer assembly is a fastener combination that includes a hexagonal bolt, a spring (elastic) washer, and a flat (plain) washer. Together, they provide a secure, vibration-resistant connection widely used across industrial and civil applications.
Q What sizes are available for hexagon head bolt washer assemblies?
Standard thread sizes available include M3, M4, M5, M6, M8, M10, and M12, with specific dimensional values for height (H), outer diameter (dc), and other parameters as specified in the product table above.
Q What standards do these assemblies comply with?
These assemblies reference the following Chinese national standards: bolts per GB 5783, and washers per GB 9074.24 and GB 9074.26. Please note that M8, M10, and M12 H values may not be fully consistent with GB 9074.24-88.
Q What industries use hexagon head bolt flat washer assemblies?
These assemblies are used across a wide range of industries including construction, automotive manufacturing, mechanical engineering, electronics, electrical equipment, and everyday applications such as furniture and home appliance assembly.
Q Why is a spring washer used together with a plain washer?
The spring washer provides a locking and cushioning effect by absorbing vibration and preventing loosening, while the plain washer distributes the load evenly across the surface, protecting the connected parts from damage and ensuring a stable, long-lasting connection.
Q Can these assemblies be used in high-impact or high-precision applications?
Yes. Hexagon head combination bolt assemblies are specifically recommended for applications requiring high assembly accuracy and resistance to larger impact forces, such as automobile body and engine installation, structural steel connections, and precision mechanical equipment.