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OnBuy.com£6.25Visit shop A2-304 St/St Chippy Woodscrews 4.0 X 35Mm - General Purpose - Box Of 200 5014196170350
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The Range£6.30Visit shop Unifix A2-304 St/St General Purpose Chippy Woodscrews 4.0 X 25Mm - Q2021ch00040002500j - Box Of 200 - Grey
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The Unifix A2-304 General Purpose Chippy Woodscrews are designed for professional carpenters and DIY enthusiasts looking for a reliable, long-lasting fastener for wood-to-wood applications. Featuring a high-quality A2-304 stainless steel construction, these screws provide excellent resistance to corrosion, ensuring the integrity of your projects even in challenging environments. While they are ideal for external and internal woodwork, users should ensure they are using the correct pilot hole size for denser timber to prevent splitting.
| Colour | Grey |
|---|---|
| Model Part Number | 1263445 |
| Brand | Unifix |
Yes, the A2-304 stainless steel construction makes them highly resistant to corrosion and suitable for most outdoor applications.
It refers to the drive type (Pozi) which is more stable than Phillips, and the countersunk head, which allows the screw to sit flush with the material surface.
While not always necessary for softwoods, drilling pilot holes is recommended for hardwoods to prevent the wood from splitting.
For mild exposure they work well, but for harsh salt-spray environments, A4 grade stainless steel is generally recommended over A2.
Each standard box contains 150 screws.
Ensure the screwdriver bit is not worn and is the correct size for the Pozi head. Apply consistent downward pressure.
Drill a smaller pilot hole before driving the screw, especially when working close to the edge of a board.
For optimal results, select a screwdriver bit that perfectly matches the Pozi drive size of the screw to prevent stripping. While these screws are corrosion-resistant, they should be stored in a cool, dry place to maintain their finish. If using these in highly corrosive marine environments, consider upgrading to A4-grade stainless steel; however, for general gardening and cabinetry, the A2-304 grade is the industry standard for longevity. Always ensure the screw is driven perpendicular to the surface for the strongest possible bond.
