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The Range£13.35Visit shop Unifix A2-304 Stainless Steel Hexagon Bolts M8 X 75 - Q209310000800075000 - Box Of 50 - Grey
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The Unifix A2-304 Stainless Steel Hexagon Bolts are engineered for contractors, engineers, and DIY enthusiasts who require high-strength, corrosion-resistant fastening solutions for structural and outdoor projects. These bolts deliver exceptional reliability and long-term durability in challenging environments, though users should ensure they select the correct thread pitch and diameter for their specific load-bearing requirements to avoid structural failure.
| Colour | Grey |
|---|---|
| Model Part Number | Q209310001000050000 |
| Brand | Unifix |
A2-304 is a standard grade of stainless steel that provides good corrosion resistance in atmospheric environments, making it suitable for most outdoor applications.
While A2-304 offers good corrosion resistance, it is not recommended for direct immersion in saltwater. A4 grade stainless is typically preferred for marine-specific conditions.
Yes, provided the threads remain intact and show no signs of stretching or deformation after initial use.
It is recommended to use stainless steel nuts, preferably also of the A2-304 grade, to prevent galvanic corrosion between dissimilar metals.
DIN 931 refers to the German industrial standard for hexagon head bolts with a partial thread, ensuring precise dimensional tolerances.
Check for debris in the mating thread and ensure the bolt is perfectly perpendicular to the surface.
Verify the socket size is an exact match and the tool is fully seated on the hex head before applying pressure.
Galling can occur in stainless steel fasteners; reverse the bolt, clean the threads, and apply an anti-seize lubricant.
For installation, ensure you are using a wrench or socket of the correct size to prevent rounding the hexagon head. When fastening into threaded holes, start the bolt by hand to ensure the threads are properly aligned and not cross-threaded. For heavy-duty structural joints, consider using a torque wrench to reach manufacturer-specified values. While stainless steel is highly resistant to corrosion, avoid using carbon steel tools on these bolts as this can leave iron particles that may lead to surface rust. Keep the bolts in their original packaging until use to prevent thread damage and maintain the finish. If working in extremely high-friction environments, applying a small amount of anti-seize lubricant to the threads is recommended to prevent galling.
