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Debenhams£6.27Visit shop Unifix Unisex Silver A2-70 St/St Socket Head Cap Screws M5 X 20 - Box Of 40 In
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The Unifix Socket Head Cap Screws DIN 912 are precision-engineered fasteners ideal for both DIY hobbyists and professional tradespeople who require a secure, flush-fitting connection. These M5 x 20 screws offer exceptional structural reliability for machinery, furniture assembly, and automotive repairs; however, users should ensure they have the correct metric hex key size, as the socket head requires a specific internal drive rather than a standard screwdriver.
| Colour | Grey |
|---|---|
| Model Part Number | 5014196127682 |
| Brand | Unifix |
You need a standard metric hex key (Allen wrench) that matches the size of the M5 socket head.
While durable, these screws are not specifically treated for high-corrosion marine or extreme outdoor environments. Use in dry, interior settings is recommended.
DIN 912 is a German standard that defines the dimensions, thread pitch, and geometry of socket head cap screws.
Yes, you can use a primer and metal paint to color-match the screw heads to your project.
Most standard steel cap screws are magnetic, which can be helpful for retrieval during assembly.
Verify that you are using a high-quality metric hex key and that it is fully seated in the socket; if the head is already rounded, use a screw extractor.
Check that the pilot hole is the correct size for an M5 fastener; applying a small amount of lubricant to the threads can also ease installation.
For installation, ensure you are using a quality metric hex key that fits the socket precisely to avoid rounding out the head. When installing into metal, it is recommended to tap the hole first or use a pilot hole for wood to prevent splitting. To maintain these screws, keep them dry and free of moisture to prevent corrosion. If installing in a high-vibration environment, consider using a thread-locking compound to ensure the fastener does not loosen over time. Always verify that your project components are drilled to a diameter compatible with M5 fasteners.
