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Hexagon Head Bolt Assemblies with Spring and Plain Washers – China Suppliers and Factory for Galvanized Steel Solutions
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Hexagon Head Bolt Assemblies with Spring and Plain Washers – China Suppliers and Factory for Galvanized Steel Solutions

Galvanized combination bolts, manufactured from high-quality galvanized steel, are essential components for connecting, securing, and supporting various elements in construction and mechanical applications. Known for their rust and corrosion resistance, these bolts are perfect for outdoor or damp environments, ensuring long-lasting performance. Typically available with nuts and washers, galvanized combination bolts are widely used in steel structures, bridges, and heavy construction projects. As a trusted China supplier and factory, we provide durable and reliable galvanized bolts that meet the highest industry standards, making them an ideal choice for your construction needs

    Hexagon head bolt, spring washer and plain washer assemblies
    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
    Key Uses of Hexagonal Screw with Spring Washer & Flat Washer Assembly
    • 1

      Buffering EffectIn 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 loose screws or deformation of connecting parts, thus increasing the reliability of the connection.

    • 2

      Locking ActionThe 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.

    • 3

      Reduce Connection Component DamageConnecting 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.

    • 4

      Wide Application FieldsHexagon head screw elastic pad application fields are very wide — not only used in construction, automotive, mechanical, electronic, and electrical industries, but also visible in daily life for assembly of furniture, electrical goods, and other applications.

    • 5

      Specific ApplicationsHexagon head combination bolts are ideal for assemblies requiring high accuracy and the ability to withstand larger impact forces. For example, in automobile manufacturing, they are widely used for body and engine installation. In mechanical equipment manufacturing and maintenance, they are used for connecting mechanical parts. In construction, they are used to connect steel structures.

    🔍 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 buffering, and is widely used in various industrial and civil fields.
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    Frequently Asked Questions (FAQ)
    QWhat is a hexagon head bolt with spring washer and plain washer assembly?
    A hexagon head bolt with spring washer and plain washer assembly is a combination fastener that includes a hexagonal bolt, an elastic (spring) washer, and a flat (plain) washer. This assembly is designed to provide secure, vibration-resistant connections in mechanical and structural applications.
    QWhat sizes are available for this bolt assembly?
    This bolt assembly is available in standard metric thread sizes including M3, M4, M5, M6, M8, M10, and M12, covering a wide range of industrial and structural fastening requirements.
    QWhat standards apply to this hexagon bolt assembly?
    The assembly follows Chinese national standards: bolts conform to GB 5783, and washers conform to GB 9074.24 and GB 9074.26. Please note that M8, M10, and M12 H values may differ from GB 9074.24-88 corresponding values.
    QIn which industries are hexagon head bolt assemblies commonly used?
    These assemblies are widely used across many industries including automotive manufacturing (body and engine installation), construction (steel structure connections), mechanical equipment, electronics, and electrical industries. They are also used in everyday applications such as furniture and appliance assembly.
    QWhy is a spring washer used together with a plain washer in this assembly?
    The spring washer provides a locking and buffering function by absorbing vibration and preventing the bolt from loosening under dynamic loads. The plain washer distributes the load evenly across the connected surface and protects it from damage. Together, they significantly improve connection reliability and longevity.
    QCan these bolt 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 the ability to withstand larger impact forces, such as engine mounting in automotive manufacturing and critical joint connections in heavy machinery.