Metric Hexagon Bolts Grade 4.6 Galvanised

Electro South West Ltd
Regular priceFrom £6.00
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The Metric Hexagon Bolt Grade 4.6 Galvanised is a dependable, versatile fastener designed for low-to-medium stress applications where corrosion resistance is a priority. These bolts feature a standard hexagonal head for easy installation with a wrench or socket and are finished with a protective galvanised coating to withstand outdoor environments. Whether you are working on timber construction, light steel framing, or general maintenance, these bolts provide a cost-effective solution without compromising on longevity.

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Corrosion Protection: Hot-dipped galvanised finish provides superior resistance to rust and oxidation in outdoor or damp conditions.
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Grade 4.6 Strength: Specifically engineered for applications requiring reliable low-carbon steel tensile strength.
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Easy Installation: The precision-machined hexagonal head ensures a secure grip for standard hand tools and power drivers.

Finding the right balance between cost-efficiency and durability is essential for any construction or repair project. The Metric Hexagon Bolt Grade 4.6 Galvanised is designed to fill this gap, offering a robust fastening solution for projects that do not require the high-tensile strength of grade 8.8 or 10.9 bolts but still demand protection against the elements.

The primary advantage of these bolts lies in their galvanised finish. Unlike standard zinc-plated fasteners, the galvanisation process creates a much thicker, more durable barrier. This makes these bolts particularly effective for external use, such as in the assembly of garden furniture, timber decking, or agricultural fencing, where moisture and humidity would typically cause rapid oxidation. By choosing a galvanised finish, you significantly extend the lifecycle of the fastener and the integrity of the overall structure.

From a technical standpoint, Grade 4.6 steel is known for being more malleable than higher grades, making it less prone to snapping under sudden shifts in light loads. This makes it an excellent choice for timber-to-timber or timber-to-metal applications. The hexagonal head is designed for high-torque application, ensuring that the bolt can be tightened securely without the risk of cam-out, which is common with recessed drive types.

These bolts are a staple for contractors and home improvers alike. They provide a professional finish that blends well with outdoor hardware while offering the peace of mind that comes with a corrosion-resistant coating. When paired with galvanised nuts and washers, they create a unified fastening system that resists the rigors of weathering over time. Whether you are stocking up for a large-scale project or performing routine maintenance, these hexagon bolts offer the consistency and quality required for a job well done.

Product Details

  • Key Features

    Material: Low-Carbon Steel

    Property Class: Grade 4.6

    Finish: Galvanised (Hot-Dip or Mechanical)

    Head Type: Hexagonal

    Thread Type: Metric Coarse (Standard)

    Compliance: Manufactured to standard metric fastener specifications

  • Whats in the box?

  • Metric Hexagon Bolts Grade 4.6 Galvanised

    Metric Hexagon Bolts Grade 4.6 Galvanised

Frequently Asked Questions

What does "Grade 4.6" signify for these bolts?

Grade 4.6 refers to the mechanical properties of the steel. The first digit (4) indicates a nominal tensile strength of 400 MPa, while the second digit (.6) indicates that the yield strength is 60% of the nominal tensile strength.

Can these bolts be used for heavy structural steelwork?

These bolts are intended for light-to-medium duty applications. For heavy structural steel or load-bearing industrial frameworks, a higher grade such as 8.8 or 10.9 is typically recommended.

Why should I choose galvanised over zinc-plated?

Galvanised coatings are significantly thicker and offer much better protection in outdoor, coastal, or high-moisture environments compared to standard bright zinc plating (BZP).