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Window Fabrication Screws - Countersunk - PH - Self-Tapping - Silver

Window Fabrication Screws - Countersunk - PH - Self-Tapping - Silver

Multiple uses for fitting a variety of hardware to frames where there is a steel or aluminium rein...

Best current price£8.16from Power Tools Direct

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Timco 120Z Window Fabrication Screws - Countersunk With Ribs - Ph - Self-Tapping - Self-Drilling Point - Zinc 3.9 X 13

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B&Q£13.63Visit shop

B&Q - Window Fabrication Screws Countersunk Ph Self-Tapping Self-Drilling Point Zinc3.9 X 45

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Power Tools DirectTimco 120Z Window Fabrication Screws - Countersunk With Ribs - Ph - Self-Tapping - Self-Drilling Point - Zinc 3.9 X 13
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£8.16
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B&QB&Q - Window Fabrication Screws Countersunk Ph Self-Tapping Self-Drilling Point Zinc3.9 X 45
Free delivery in 1–3 days
£13.63
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OnBuy.comTimco 120Z Self Drill Pvc Screw Ribed Csk Bzp 3.9 X 13Mm Box Of 1,000
Free delivery in 1–3 days
£14.61
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eBayTIMCO S/Drill PVC Screw CSK - BZP 3.9 x 45 Pack 500
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£16.50
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Product Information

Full details

These TIMco Window Fabrication Screws are designed for professionals fitting hardware to frames with steel or aluminum reinforcement. Their key benefit is the self-drilling, self-tapping design, which simplifies installation and ensures a secure hold. A caveat is their specific application on substrates up to 2.5mm thick. This guide covers their features, use, and care to help you achieve efficient and reliable installations.

All features

ColourSilver
Model Part Number124Z
BrandTimco

Extended Product Information

FAQs

What is the maximum thickness of material these screws can drill through?

These screws have a maximum drilling thickness of 2.5mm in steel or aluminum substrates.

What type of screwdriver bit do I need?

You will need a Phillips #2 (PH2) screwdriver or drill bit.

Are these screws suitable for outdoor use?

They have a Corrosion Rating 2, making them suitable for occasionally damp/wet, rural, and sheltered areas. They are not recommended for constantly exposed or harsh outdoor environments.

Can I use these on uPVC frames?

These screws are primarily for steel or aluminum reinforcement. If your uPVC frame has these reinforcements, they can be used. They are not designed to solely grip uPVC material.

Do I need to pre-drill a hole?

No, the self-drilling point eliminates the need for a pilot hole in compatible substrates like steel and aluminum.

What does 'Countersunk Head' mean for installation?

A countersunk head means the screw is designed to sit flush with the surface of the material it is fastening into, providing a neat and unobtrusive finish.

How many screws are in a pack?

This specific product is a pack of 1000 pieces.

Troubleshooting

Screw not penetrating the substrate

Ensure the substrate is within the 2.5mm maximum drilling thickness. Check that the screw's self-drilling point is not damaged. Use a powerful enough drill or driver.

Screw head strips during driving

Ensure you are using the correct PH2 driver bit. Apply firm, consistent downward pressure. If stripping occurs, use a screw extractor or carefully remove the screw.

Loose fixing after installation

Verify that the screw has properly tapped into the substrate. Ensure the substrate material is sufficient for the thread engagement. If the hole is stripped, a slightly larger screw or a different fixing method may be required.

Premature rust or corrosion

Store screws in a dry environment. Ensure the application environment is suitable for Corrosion Rating 2. For more demanding conditions, consider screws with higher corrosion resistance.

Pros and Cons

Pros

  • Speeds up installation with self-drilling and self-tapping capabilities.
  • Provides a strong and reliable fixing, especially in steel or aluminum reinforced frames.
  • Offers a clean, flush finish due to the countersunk head.
  • Tested to relevant industry standards for assured performance.
  • Durable construction from carbon steel with a protective zinc finish.

Cons

  • Limited to a maximum drilling thickness of 2.5mm.
  • Primarily designed for specific frame materials (steel/aluminum reinforcement).
  • Phillips recess can be prone to cam-out if excessive force is applied.
  • Corrosion resistance is moderate (Rating 2), not suitable for highly corrosive environments.
  • Requires a PH2 driver bit, limiting compatibility with other tool types.

Setup, Compatibility & Care

Setup:

  1. Ensure you are using a standard PH2 screwdriver or drill bit.
  2. Align the screw with the desired fixing point on the frame reinforcement.
  3. Apply firm, steady pressure while driving the screw.
  4. Drive the screw until the head is flush with the frame surface.

Compatibility:

  • Substrates: Primarily designed for steel and aluminum reinforcements within frames. They can also be used in uPVC and timber if the substrate is suitable and the thickness limit is observed.
  • Tools: Requires a PH2 (Phillips #2) driver bit.
  • Environment: Suitable for Corrosion Rating 2 environments (occasionally damp/wet, rural, and sheltered areas).

Care:

  • Store screws in a dry place to prevent premature corrosion of the zinc finish.
  • Clean the screw head area after installation if debris accumulates.
  • Avoid over-driving the screw, which can strip the threads or damage the surrounding material.
  • For highly corrosive environments, consider screws with a higher corrosion rating or alternative finishes.

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