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The Unifix Grade 8.8 HT Hexagon Setscrews are engineered for professionals and DIY enthusiasts who require high-strength fastening solutions in demanding structural or mechanical applications. These screws provide exceptional tensile integrity and long-term durability thanks to their BZP corrosion-resistant coating, though they are specifically designed for applications where high-grade steel mechanical properties are strictly necessary.
| Colour | Silver |
|---|---|
| Model Part Number | 1264022 |
| Brand | Unifix |
Grade 8.8 denotes the mechanical properties of the steel. The 8 indicates a minimum tensile strength of 800 MPa, and the .8 indicates the yield strength is 80% of the tensile strength.
Yes, DIN 933 is the standard specification for fully threaded hexagon setscrews.
Yes, the BZP finish offers good corrosion resistance for general outdoor use, but they are not recommended for salt-air or marine environments.
You will need a standard metric spanner or a socket wrench compatible with the hexagon head size.
While technically possible, it is recommended to replace fasteners after they have been tightened to their maximum torque to ensure continued structural integrity.
Check for debris or paint inside the threaded hole; ensure the thread pitch matches the bolt.
Ensure you are using the correct metric spanner or socket size and that the tool is fully seated on the hex flats.
To install, ensure the hole is clear of debris and the threads are aligned before tightening to prevent cross-threading. Use a calibrated torque wrench if the manufacturer of the equipment you are fastening specifies a particular tension setting. Because the BZP coating is a protective layer, avoid using abrasive tools or welding directly onto the screw, as this can destroy the corrosion resistance. If stored for long periods, keep them in a dry, low-humidity environment to maintain the integrity of the zinc plating.
