Best current price£6.62from The Range
Shopping.co.uk recommended and popular offers
The Range£6.62Visit shop Unifix A2-70 St/St Socket Button Head Screws M8 X 25 - Box Of 20 - Grey
Visit shop4 offers from £6.62 - £6.87
View price history by clicking the chart icon.
The Unifix A2-70 Socket Button Head Screws are essential fasteners for professional fabricators and DIY enthusiasts requiring reliable, corrosion-resistant connections in wood, metal, or plastic projects. These high-quality stainless steel screws feature a low-profile aesthetic and internal hex drive for secure torque, though they are specifically intended for machine-threaded applications rather than direct-into-wood driving.
| Colour | Silver |
|---|---|
| Model Part Number | 1260960 |
| Brand | Unifix |
A2 refers to the grade of stainless steel (304), which offers excellent corrosion resistance, while 70 refers to the tensile strength class.
While A2 stainless steel is corrosion-resistant, it is generally recommended to use A4 (316) stainless steel for direct, frequent exposure to marine saltwater.
No, these are machine screws and require a pre-tapped or threaded hole to be installed.
You will need a standard metric hex key (Allen key) matching the size of the screw socket.
A2 stainless steel is typically non-magnetic in its annealed state, though it may exhibit slight magnetism after the cold-working process.
Verify that the hole diameter is correct and that the threads are not obstructed by debris; ensure the thread pitch matches the tapped hole.
Ensure you are using a high-quality, non-worn hex key that is the exact size required for the socket.
To install these screws, ensure you are using a correctly sized metric Allen key that fits the internal socket. For maximum longevity, avoid using carbon steel tools to tighten these stainless steel screws, as cross-contamination can introduce rust particles to the surface of the fasteners. When installing into metal, pre-drill your holes to the appropriate tapping size to ensure a smooth thread engagement. If you are using these in coastal environments, consider applying a thin coating of anti-seize lubricant to the threads during installation to prevent potential galling of the stainless steel.
