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The Unifix A2-70 Socket Button Head Screws are an essential component for professionals and DIY enthusiasts working on construction or engineering projects that require high-strength, corrosion-resistant fastening. These M10 x 35 screws offer a clean, aesthetic finish and reliable holding power, making them ideal for assembly tasks where the screw head remains visible. One caveat to keep in mind is that the socket drive requires specific Allen key tools for installation, which may not be as accessible as standard screwdriver heads in some portable toolkits.
| Colour | Silver |
|---|---|
| Model Part Number | 5014196334738 |
| Brand | Unifix |
A2 refers to the grade of stainless steel (typically 304), and 70 indicates the tensile strength of the screw, which is 700 N/mm².
Yes, A2-70 stainless steel is highly resistant to corrosion and suitable for most outdoor environments, though not recommended for direct contact with salt water or harsh chemical sprays.
While standards can vary slightly, typically an M10 socket button head screw requires a 6mm hex key.
A2-70 stainless steel is generally considered non-magnetic, though slight magnetism can occur due to the cold-working process during manufacturing.
These are primarily designed for metal-to-metal or metal-to-threaded-insert applications. If used in wood, they require a pre-drilled and tapped hole.
Ensure the hex key is the exact size required and is fully inserted into the socket before applying torque. If damaged, use a screw extractor tool.
Verify that the material has the correct M10 tap and that the hole is free of debris. Use a lubricant if the material is particularly dense.
Clean the surface with a stainless steel-safe cleaner and a soft cloth to remove contaminants that may be causing surface staining.
Installation of these screws requires an appropriately sized hex key (Allen wrench) that matches the internal socket drive. Ensure that the pilot hole or threaded insert is compatible with an M10 thread pitch to prevent cross-threading during installation. When tightening, apply steady pressure to the tool to avoid stripping the internal socket. For maintenance, while the A2-70 material is corrosion-resistant, it is recommended to periodically wipe the screw heads clean of debris or corrosive industrial pollutants in outdoor settings to maintain their appearance and structural integrity. Do not use stainless steel fasteners in contact with incompatible metals without insulating washers, as this can lead to galvanic corrosion.
