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The Range£10.17Visit shop Unifix Grade 8.8 Ht Hexagon Setscrews Din 933 Galv - M16 X 50 - Grey
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The Unifix Grade 8.8 High Tensile Hexagon Setscrews are designed for professionals and DIY enthusiasts requiring reliable, heavy-duty fastening in automotive, construction, and machinery applications. These M20 x 45 screws provide superior structural integrity and corrosion resistance thanks to their high-tensile rating and galvanized finish, though users should ensure these dimensions match their specific project requirements to avoid stripping or fitment issues.
| Colour | Grey |
|---|---|
| Model Part Number | 1264103 |
| Brand | Unifix |
The 8.8 rating indicates the mechanical properties of the steel, specifically its tensile strength and yield point, identifying it as high-tensile hardware.
Yes, the galvanized finish provides resistance against rust and environmental corrosion, making them suitable for many outdoor applications.
A standard hexagon socket or wrench that fits the M20 head size is all that is required for installation.
Yes, as hexagon setscrews, they are typically fully threaded along the shank to provide maximum contact area.
While they are high-tensile, always consult your project's structural engineering specifications to ensure Grade 8.8 meets the required safety load rating.
Check the thread pitch and diameter to ensure it is M20 and inspect the tapped hole for blockages or paint buildup.
Ensure your socket or wrench is the correct size and fully seated on the hexagon head before applying force.
Check if the galvanized layer was damaged by aggressive tool usage and consider applying a cold-galvanizing spray.
For optimal performance, always ensure the threaded hole is clear of debris or rust before inserting the setscrew. When tightening, use a properly calibrated wrench to match the torque specifications of your assembly. If installing into a pre-threaded steel plate, apply a light coat of anti-seize lubricant if the application involves high-temperature environments. Periodically inspect the screw heads for signs of wear or rust if the assembly is exposed to outdoor elements, and replace immediately if the threads show signs of stripping or mechanical deformation.
