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The Range£7.22Visit shop Unifix Grade 4.8 Cup Square Hex Bolts And Nuts Din 603/555 Bright Zinc Plated Ce - M6 X 50 (Box Of 100) - White
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The Unifix Grade 4.8 Cup Square Hex Bolts and Nuts are high-quality fasteners designed for DIY enthusiasts, builders, and professionals who require reliable hardware for construction and repair projects. These fasteners are constructed from Grade 4.8 steel and are bright zinc plated for enhanced corrosion resistance, meeting the strict DIN 603/555 standards for safety and consistency. While they offer excellent structural integrity for general assemblies, they are specifically engineered for standard loads and are not intended for high-tensile industrial applications.
| Colour | White |
|---|---|
| Model Part Number | 1426847 |
| Brand | Unifix |
Grade 4.8 denotes the mechanical properties of the steel, indicating a nominal tensile strength of 400 MPa and a yield strength that is 80% of the tensile strength, suitable for general construction.
Yes, the bright zinc plating provides a layer of protection against corrosion, making them suitable for standard outdoor garden projects, though they are not intended for marine or extreme saline environments.
You will need a standard wrench or socket to tighten the hexagonal nut, and potentially a hammer to seat the square shoulder of the bolt into the timber.
Yes, these are supplied as a complete set including both the cup square bolts and the matching hex nuts.
Yes, as they are manufactured to DIN 603/555 standards, they are dimensionally compatible with other hardware adhering to the same metric standards.
This product comes in a box containing 200 units.
The square neck of the bolt has not seated properly into the timber; use a hammer to gently tap the bolt head into the material so the square shank engages the wood.
Check the threads for debris or paint; if the bolt is deformed, discard it and use a new unit from the pack to ensure a secure fit.
Ensure the bolts are not exposed to standing water or harsh acidic environments; if rust appears, replace the hardware to maintain structural integrity.
Installation requires standard wrenches or socket sets to tighten the hexagonal nut onto the threaded bolt. Ensure that you are using washers if you need to protect the surface of the material being fastened.
