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The Range£10.43Visit shop Unifix Grade 10.9 Ht Hexagon Setscrews Din 933 S/Col - M8 X 25 - Grey
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The Unifix Grade 10.9 High Tensile Hexagon Setscrews are engineered for construction and mechanical professionals who require maximum load-bearing capability and fastening reliability. These fasteners provide exceptional structural integrity for heavy-duty engineering projects, though users must ensure correct thread sizing and torque application to avoid material stress.
| Colour | Grey |
|---|---|
| Model Part Number | M16 X 80 |
| Brand | Unifix |
Grade 10.9 refers to the material strength properties, indicating a tensile strength of 1000 MPa and a yield strength of 900 MPa.
While the finish offers some protection, they are primarily for structural engineering. For marine or highly corrosive environments, stainless steel may be a better alternative.
Yes, as setscrews manufactured to DIN 933, they are fully threaded from the base of the head to the tip.
You will need a standard spanner or socket wrench corresponding to the specific hexagon head size of the bolt.
It is generally recommended to replace high tensile bolts after they have been tightened to their yield point in critical structural applications.
Check for debris in the threads or ensure the hole is correctly tapped to the required pitch and diameter.
Verify that the socket or wrench size is exact. Replace the bolt and use a high-quality, non-worn tool.
For proper installation, use a compatible hex wrench or socket that fits the head profile perfectly to prevent rounding. When working with high tensile bolts, it is advisable to use a calibrated torque wrench to achieve the manufacturer's specified clamping force for your specific joint. Keep the threads lightly lubricated with machine oil if the environment is prone to humidity, and store in a dry, organized container to prevent thread damage. Ensure the bolt length is appropriate; for best results, allow for at least 1.5 times the bolt diameter of engagement in the tapped material.
