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The Range£3.85Visit shop Unifix General Purpose Chippy Woodscrews 3.5 X 16Mm - 9Chippyz/030 - Box Of 200 - Grey
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The Unifix General Purpose Chippy Woodscrews (5.0 x 40mm) are essential fasteners designed for DIY enthusiasts and professionals tackling general woodworking tasks. These screws provide reliable grip and long-term durability thanks to their Bright Zinc Plated finish, making them highly resistant to corrosion in standard interior environments. While they are excellent for broad construction and assembly, users should note that they are specifically optimized for wood and may require pilot holes in hardwoods to prevent splitting.
| Colour | Silver |
|---|---|
| Model Part Number | 1260513 |
| Brand | Unifix |
While they feature a zinc-plated finish for corrosion resistance, they are best suited for indoor use or protected outdoor environments.
No, these use a standard Pozi drive bit, which is commonly found in most household toolkits.
These specific screws have a 5.0mm gauge diameter.
They are designed for wood and will bite effectively, but for harder materials, a pilot hole is always advised.
It is a protective layer applied to the steel to prevent rust and corrosion, while also providing a bright, clean silver appearance.
Ensure you are using the correct size Pozi bit and reduce the torque setting on your power drill.
Drill a pilot hole slightly smaller than the screw diameter before driving the fastener, especially near board edges.
Use a countersink bit first to create a small bevel for the screw head to nestle into.
To achieve the best results, use a correctly sized Pozi drive bit that matches the screw head to avoid stripping the recess.
Compatibility Guidelines:
| Material Type | Usage Recommendation |
| :--- | :--- |
| Softwood | Direct drive recommended |
| Hardwood | Pilot hole required |
| MDF/Particleboard | Pilot hole recommended |
Care Instructions:
To maintain the longevity of the zinc plating, avoid using these screws in high-salinity coastal environments or direct, moisture-prone outdoor exposure. Store screws in their original packaging in a dry area to prevent premature oxidation before installation.
