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The Range£7.25Visit shop Unifix A2-304 St/St General Purpose Chippy Woodscrews 4.0 X 40Mm - Ub9ststchippy/035 - Box Of 125 - Grey
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The Unifix General Purpose Chippy Woodscrews are ideal for woodworkers, carpenters, and DIY enthusiasts who require a reliable, versatile fastener for general-purpose timber projects. These screws deliver excellent grip and enhanced drive performance, making assembly tasks straightforward and efficient. However, users should note that while they are suited for standard applications, they may require specialized alternatives for high-load structural joints or highly corrosive environments.
| Colour | Grey |
|---|---|
| Model Part Number | 1263555 |
| Brand | Unifix |
These are primarily for general purpose indoor use; for highly corrosive or wet outdoor environments, consider stainless steel alternatives.
These screws are designed for Pozi-drive bits, which provide the best grip and torque transfer.
While often not strictly necessary in softer woods, pre-drilling is highly recommended for hardwoods or when working near edges to prevent splitting.
These are specifically engineered as woodscrews; they are not optimized for fastening into metal.
The 5.0mm refers to the diameter of the screw shank, and 40mm is the overall length of the screw.
Ensure you are using the correct pilot hole size or check if the timber density requires a different thread type.
Verify that your driver bit is the correct size for the Pozi head and ensure you are applying sufficient forward pressure.
Always pre-drill a pilot hole, especially when working close to the edge of the wood.
To ensure success, always select the appropriate length for your specific board thickness to avoid piercing the opposite side. Ensure you use the correct size Pozi screwdriver bit that matches the screw head to prevent stripping the head or damaging the tool. While these screws are durable, they should be kept in a dry environment to maintain their finish. When installing, apply steady pressure during the initial drive to keep the screw perpendicular to the surface. Clean any metallic residue from the work area after installation to avoid rust staining on finished timber surfaces.
