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The Range£6.17Visit shop Unifix General Purpose Chippy Woodscrews 5.0 X 40Mm - Ub9chippy/165 - Box Of 125 - Grey
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The Unifix General Purpose Chippy Woodscrews (UB9CHIPPY/220) are designed for DIY enthusiasts and professional woodworkers tackling a variety of projects. Their key benefit lies in their high-quality construction and corrosion resistance, ensuring durability and a secure hold. A potential caveat is their specific Pozi CSK head, which requires a compatible driver. These screws offer excellent grip and longevity for general woodworking, construction, and DIY tasks, featuring a ZYP coating for enhanced protection.
| Colour | Gold |
|---|---|
| Model Part Number | UB9CHIPPY/220 |
| Brand | Unifix |
You will need a Pozi drive screwdriver or drill bit. The common size for these 6.0mm screws is PZ2.
Yes, the ZYP coating provides corrosion resistance, making them suitable for many outdoor applications. For prolonged or harsh exposure, additional protective measures may be beneficial.
While similar in appearance, Pozi screws have four extra slots compared to Phillips screws, which provides better engagement, reduces cam-out (driver slipping out of the head), and allows for more torque to be applied.
These screws are designed primarily for woodworking. While they might fasten thin sheet metal to wood, they are not intended for metal-to-metal applications without appropriate pre-drilling and consideration for material hardness.
CSK stands for Countersunk. This means the head is designed to sit flush with or below the surface of the material being fastened.
Store the screws in a cool, dry place to prevent moisture from affecting the ZYP coating and to maintain their condition.
Ensure you are using the correct size Pozi driver bit (e.g., PZ2). Apply firm, consistent pressure directly into the screw head and drive at a moderate speed. Pre-drilling an appropriate pilot hole can reduce the torque needed.
Verify that a pilot hole has been drilled. If the wood is very soft, the screw may be overdriven. If the wood is hard, the pilot hole may be too small. Ensure the countersink is adequate for the screw head.
Check if the pilot hole is sufficiently large for the screw's shank. Driving the screw too quickly or at an angle can also cause bending. Ensure you are not attempting to drive the screw into materials it's not designed for (e.g., hard metal).
Setup: These screws require a Pozi drive screwdriver or drill bit for installation. Ensure you select the correct size Pozi bit (PZ2 is common for this size screw) to match the CSK head. Pre-drilling pilot holes, especially in hardwood or near the edge of timber, is recommended to prevent splitting and ensure easier driving.
Compatibility: The Unifix General Purpose Chippy Woodscrews are primarily designed for use in wood. They are compatible with most common timber types used in construction and woodworking. The Pozi drive is widely available but distinct from Phillips or Torx drives.
Care: Store screws in a dry environment to maintain the integrity of the ZYP coating. Avoid prolonged exposure to excessive moisture if the screws are not fully countersunk or protected by a sealant. After installation, ensure fasteners are not overdriven, which could damage the wood or compromise the screw's holding power.
