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The Unifix General Purpose Chippy Woodscrews are a versatile fastening solution designed for both DIY enthusiasts and professional tradespeople engaged in general woodworking and joinery projects. These screws feature a Pozi countersunk head for improved drive stability and a durable ZYP coating to ensure long-lasting corrosion resistance. While they offer excellent performance in standard timber applications, users should note that they are specialized for wood and may require pilot holes when working with particularly dense or hardwood materials.
| Colour | Grey |
|---|---|
| Model Part Number | 9CHIPPY/040 |
| Brand | Unifix |
Yes, the ZYP coating offers good corrosion resistance, but they are best suited for sheltered outdoor areas rather than direct, prolonged exposure to harsh weather.
These screws utilize a Pozi drive head, so you should use a compatible Pozi screwdriver bit.
For softwoods, it is often optional, but for hardwoods or near edges, drilling a pilot hole is highly recommended to prevent wood splitting.
No, these are designed specifically for woodworking and joinery applications.
This specific item comes in a box containing 200 screws.
ZYP stands for Zinc Yellow Passivated, a coating process that adds a layer of protection against corrosion.
Ensure you are using the correct size Pozi bit and verify that the drill clutch is not set too high.
Always drill a pilot hole, particularly when working near the edge of a board or with denser wood types.
Use a countersink bit before driving the screw to create a clean recess for the head.
To achieve the best results, ensure you select the correct size of Pozi screwdriver bit (typically PZ1 or PZ2 depending on the specific screw gauge) to prevent damage to the screw head. If using a power drill, keep the clutch setting low to avoid over-driving, which could strip the timber threads. While the ZYP coating is resistant to moisture, avoid using these screws in treated timbers that contain high levels of corrosive chemicals. Store the screws in a dry, temperate environment to prevent the accumulation of moisture within the box, which can eventually degrade the protective plating.
