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eBay£1.90Visit shop PLUSDRIV (POZI) COUNTERSUNK 12 x 1.75"" WOODSCREW HARDENED & ZINC PLATED PACK 100
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The Range£5.08Visit shop Unifix Twinthread Woodscrews Pozi Csk Head Bzp 9Tqtqcskpz/067 7G X 1.1/2" (3.9 X 40/30Mm) Box Of 200 - Grey
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The Unifix Twinthread Woodscrews are essential fasteners for woodworkers, DIY enthusiasts, and contractors looking for reliable, high-performance joining in various timber applications. These screws feature a Pozi countersunk head for a flush finish and a bright zinc-plated coating for enhanced durability and corrosion resistance, though they are strictly intended for wood projects rather than masonry or metal substrates.
| Colour | Silver |
|---|---|
| Model Part Number | 9Tqtqcskpz/051 |
| Brand | Unifix |
They feature a bright zinc plating which provides basic corrosion resistance, but they are not intended for long-term exposure to harsh outdoor elements.
These screws require a standard Pozi drive bit compatible with the specific gauge of the screw.
No, these are specifically designed for wood applications and will not perform correctly in metal.
While often unnecessary in softwoods, a pilot hole is highly recommended for hardwoods to prevent splitting.
The twinthread profile provides a faster, more secure bite into the wood fibers compared to standard single-thread screws.
Ensure the driver bit matches the Pozi size exactly and maintain firm, downward pressure while driving.
Drill a pilot hole slightly smaller than the shank diameter before driving the screw.
Ensure the pilot hole is properly countersunk to accommodate the head profile.
For the best results, always use a Pozi-compatible driver bit that matches the gauge of your Unifix screws to prevent stripping the screw head. While these screws are sharp, it is best practice to drill a pilot hole when working with hardwood to avoid splitting the timber. To maintain the integrity of the zinc coating, avoid using these screws in highly acidic or marine-grade environments, and store them in their original packaging in a dry area to prevent oxidation over time.
