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The Unifix Grade 10.9 Socket Csk Head Screws are engineered for professional contractors and DIY enthusiasts who require high-strength fastening solutions that sit flush with the material surface. Constructed from high-quality Grade 10.9 steel, these screws offer exceptional durability for heavy-duty applications; however, users should ensure they have the correct size hex key, as the socket drive requires specific tool engagement to prevent stripping.
| Colour | Silver |
|---|---|
| Model Part Number | 1264418 |
| Brand | Unifix |
Grade 10.9 is a classification of high-tensile steel indicating the screw's tensile strength and yield strength, making it suitable for structural applications.
The silver finish offers corrosion resistance, but for extremely wet or saltwater environments, stainless steel may be a better alternative.
Yes, as they are manufactured from high-tensile steel, they will exhibit magnetic properties.
You need an Allen key (hex key) or a hex-bit socket that matches the specific diameter of the screw's head socket.
This product listing refers to the screws only; please ensure you have compatible nuts or threaded inserts if your application requires them.
While the steel is strong, it is recommended to inspect for thread damage or head deformation before reusing any high-tensile fastener.
Ensure the hex key is fully seated in the socket and is not worn or undersized.
Verify that the countersink angle in your material matches the standard screw head angle and that all debris is cleared from the hole.
Check if the pilot hole is deep enough to accommodate the full length of the screw shank.
For optimal results, ensure the pilot hole diameter is appropriate for the screw gauge to prevent splitting or over-stressing the metal. If installing in hard steel, consider using a cutting fluid to reduce friction during driving. To maintain the integrity of the silver finish, avoid using acidic cleaning agents. For long-term installations in outdoor environments, periodically inspect the heads for any signs of surface degradation. These screws are fully compatible with standard metric hex drive tools found in most professional toolkits.
