Unifix Twinthread Woodscrews Pozi Csk Head Bzp Ce - 8G X 5/8 inch (4.0 X 16mm) - Grey

The Unifix Twinthread Woodscrews are engineered for reliable and secure fastening in a variety of ...

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The RangeUnifix Twinthread Woodscrews Pozi Csk Head Bzp Ce 4G X 5/8" (3.0 X 16Mm) 9Tqtqcskpz/011 Box Of 200 - Grey
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OnBuy.comUnifix Twinthread Woodscrews Pozi Csk Head Bzp Ce - 4G X 3/4" - Box Of 200 5014196077901
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eBayUnifix Twinthread Woodscrews Pozi Csk Head Bzp Ce - 4G X 5/8"" - Box of 200
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B&QB&Q - Twinthread Woodscrews Pozi Csk Head Bzp Ce4G X 5/8" (3.0 X 16mm)9Tqtqcskpz/011Box Of 200
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Product Information

Full details

The Unifix Twinthread Woodscrews are engineered for carpenters, woodworkers, and DIY enthusiasts who require a reliable and flush-fitting fastener for general woodworking applications. These screws feature a specialized twinthread design that provides superior grip and holding power, though they are specifically intended for wood substrates rather than masonry or heavy-duty metal installations. Each box contains 200 screws, making them a practical choice for small to medium-scale furniture assembly and interior carpentry tasks.

All features

ColourGrey
Model Part Number9Tqtqcskpz/071
BrandUnifix

Extended Product Information

FAQs

Can I use these screws outdoors?

These screws are Bright Zinc Plated and intended for indoor or sheltered use; they are not rated for heavy exterior exposure or permanent direct weather contact.

Do I need to drill a pilot hole?

While not always necessary in softwoods, drilling a pilot hole is highly recommended when working with hardwoods or near the edge of a piece of timber to prevent splitting.

What does Pozi mean?

Pozi refers to the Pozidriv recess pattern on the screw head, which allows for higher torque and better resistance to bit slip compared to standard Phillips heads.

Are these screws magnetic?

Yes, as they are steel-based with a zinc coating, they will be attracted to magnets.

How many screws are in the box?

Each box contains 200 individual screws.

Can I use these in metal?

No, these screws are specifically designed for wood applications and will not perform correctly in metal substrates.

Troubleshooting

Screw head strips during installation

Ensure you are using the correct size Pozi bit and reduce the torque setting on your power drill.

Wood splits when driving the screw

Drill a pilot hole slightly smaller than the diameter of the screw shank before driving the fastener.

Screw is difficult to drive in fully

Check that the pilot hole is deep enough and verify that you are not hitting a hidden metal object or knots in the wood.

Pros and Cons

Pros

  • Twinthread design ensures strong retention in wood fibers
  • Countersunk head enables flush installation for aesthetic results
  • Corrosion-resistant BZP finish protects against rust
  • Convenient 200-count pack size

Cons

  • Not intended for high-moisture or salt-air environments
  • Requires proper pilot holes in harder wood species to avoid splitting
  • Limited to wood-based materials

Setup, Compatibility & Care

To achieve the best results, use a compatible Pozi-drive screwdriver or power bit that matches the screw size exactly. Ensure the screw is driven perpendicular to the surface for maximum holding power. While the BZP finish offers corrosion resistance, these screws should not be used in environments with excessive moisture or chemical exposure, as the plating will eventually degrade. Store the remaining screws in a dry, cool environment within their original packaging to prevent oxidation of the protective coating.

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