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The Unifix Grade 8.8 High Tensile Hexagon Setscrews are engineered for construction, engineering, and heavy-duty repair projects that require superior structural integrity and reliability. These fasteners provide exceptional tensile strength, making them ideal for demanding mechanical applications, while the galvanized finish ensures long-term corrosion resistance. While they offer excellent performance in load-bearing scenarios, users should ensure proper torque calibration during installation to avoid over-tightening or damaging the threaded material.
| Colour | Silver |
|---|---|
| Model Part Number | DIN 933 |
| Brand | Unifix |
Grade 8.8 refers to the tensile strength of the steel; it is a high-tensile material capable of withstanding significant stress compared to standard grade 4.6 fasteners.
Yes, the galvanized finish provides significant protection against atmospheric corrosion, making them suitable for outdoor use.
DIN 933 is a German industrial standard that specifies that the bolt is fully threaded up to the head.
If the threads remain clean, straight, and show no signs of stretching or corrosion, they can generally be reused; however, critical applications may require new hardware.
These bolts are designed for use with standard metric spanners or socket wrenches that match the bolt head size.
Check the thread pitch for debris or damage; ensure the bolt is aligned perfectly square with the hole to prevent cross-threading.
Ensure you are using the correct size socket or spanner and verify the tool is fully seated on the hexagonal head before applying force.
To ensure maximum efficacy, always verify that the hole diameter matches the bolt size and that you are using a tool properly calibrated for the required torque. These fasteners are compatible with all standard metric nuts and internally threaded fixtures matching the DIN 933 specifications. For maintenance, periodically inspect the bolt heads for signs of corrosion or structural degradation. While the galvanized finish is durable, it can be scratched during high-torque installation; if the metal is exposed, applying a cold-galvanizing spray can help maintain the protective barrier.
