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OnBuy.com£5.58Visit shop Unifix Grade 10.9 Socket Button Head Screws M5 X 12 - Box Of 200 5014196334097
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The Range£6.16Visit shop Unifix Grade 10.9 Socket Button Head Screws M5 X 10 - Box Of 200 - Grey
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The Unifix Grade 10.9 Socket Button Head Screws are high-strength fasteners engineered for professionals and DIY enthusiasts requiring reliable, heavy-duty hardware that meets ISO 7380-1 standards. These screws offer excellent durability and tension capacity due to their 10.9-grade steel construction, making them ideal for structural assemblies where a low-profile head is required. While they provide superior strength and a corrosion-resistant finish, users should note that they require a specific hex-drive tool for installation and are not intended for environments requiring specialized marine-grade stainless steel.
| Colour | Silver |
|---|---|
| Model Part Number | 1355421 |
| Brand | Unifix |
Grade 10.9 refers to the property class of the steel, indicating a high-tensile strength suitable for heavy-duty engineering applications.
They are bright zinc plated, which offers some corrosion resistance, but they are not recommended for direct exposure to severe weather or salt spray.
You need a hex key or Allen wrench of the appropriate size that matches the socket drive.
Yes, because they are manufactured from high-quality carbon steel, they are magnetic.
Yes, unless you are driving them into an existing tapped hole, you should pre-drill the appropriate pilot hole size for the screw diameter.
Ensure you are using the correct size hex key and that the tool is fully inserted into the socket before applying torque.
Check that the hole is properly tapped and free of metal burrs or debris before attempting to drive the screw.
Wipe away moisture immediately and apply a light machine oil if the environment is prone to humidity.
To install, ensure you are using a high-quality hex key that fits the socket size precisely to avoid rounding out the head. For optimal performance, use a calibrated torque wrench if specific tension settings are required by your project documentation. While the bright zinc finish provides good protection, you should avoid using these screws in high-salinity or chemically corrosive atmospheres. To maintain the life of the screws, keep them stored in their original box in a dry, low-humidity area to prevent premature oxidation or surface degradation.
