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The Range£19.75Visit shop Jcp Fixings Woodfix Self-Drilling Screws 5.5 X 120Mm - Fjwfh55120 - Box Of 100 - Grey
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The JCP Fixings Woodfix Self-Drilling Screws (5.5 x 120mm, Silver) are designed for professionals and DIY enthusiasts tackling heavy section woodworking applications. Their key benefit is the self-drilling tip, which eliminates the need for pre-drilling, saving significant time and effort on demanding projects. A potential caveat is that their heavy-duty nature may be overkill for lighter, non-structural applications.
| Colour | Silver |
|---|---|
| Model Part Number | FJWfh55120 |
| Brand | JCP Fixings |
No, the 'Self-Drilling' feature means the screw tip is designed to create its own pilot hole, eliminating the need for separate pre-drilling.
They are primarily designed for wood-to-wood applications but can also be used for securing wood to certain metal components. They are ideal for heavy section wood.
Yes, the Bright Zinc Plated (BZP) finish provides corrosion resistance, making them suitable for many outdoor applications. However, for highly corrosive environments, specialized coatings might be more appropriate.
These screws are self-drilling, so pre-drilling is not required. If you choose to pre-drill for specific reasons (e.g., extremely hard wood), use a bit slightly smaller than the screw's minor diameter.
Yes, they can generally be used with impact drivers, provided the driver has good control and the correct bit is used. Be mindful of torque to avoid stripping the screw head.
The Bright Zinc Plated (BZP) finish offers protection against rust and corrosion, extending the lifespan of the screw, especially in less demanding environments.
Ensure the drill is set to the correct rotation (clockwise) and has sufficient power. Try a slightly higher speed or ensure the pilot tip is making clean contact with the wood surface. Check if the wood is excessively dense or contains hard knots.
Use the correct type and size of driver bit. Apply firm, consistent downward pressure to keep the bit fully engaged. If stripping persists, slow down the drill speed.
Verify that the screw has been driven to its full depth and is properly seated. Ensure the material thickness is adequate for the screw length to achieve a secure hold. For very soft wood, consider using a slightly larger diameter screw if available or reinforce the surrounding area.
Setup: These screws are designed for direct application. Ensure you are using a power drill with sufficient torque and a suitable driver bit (e.g., Phillips or Pozidriv, depending on the screw head recess). Drive the screw straight into the material, applying steady pressure until it is fully seated. For very dense hardwoods, a slightly slower speed might prevent overheating the screw tip.
Compatibility: Primarily designed for wood-to-wood applications. They can also be used for securing wood to certain types of metal brackets or frame elements. Ensure the material thickness is appropriate for the 120mm length to achieve optimal grip without over-penetration.
Care: Store screws in a dry environment to maintain the integrity of the BZP finish. Avoid prolonged exposure to moisture or corrosive substances, which can eventually lead to rust, despite the protective coating. After use, clean any excess sawdust or debris from the screw heads if they are to remain exposed.
