Diall Tx Countersunk Frame Fixing - 8mm x 100mm - Pack Of 6
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B&QB&Q - Tx Countersunk Frame Fixing (Dia)8mm (L)100mmPack Of 6
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Product Information
Full details
This guide is for builders, installers, and DIY enthusiasts needing a reliable method to fix window and door frames. The Diall TX Countersunk Frame Fixings offer a secure, professional finish with enhanced grip, though they are best suited for solid masonry and require appropriate pre-drilling. These 8mm x 100mm fixings are designed for uPVC, timber, and metal frames, providing a flush, visually appealing installation in concrete, blockwork, brickwork, and stone.
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| Brand | Diall |
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Extended Product Information
FAQs
What size drill bit should I use for these fixings?
For 8mm frame fixings, a pilot hole of 6mm or 7mm is generally recommended for solid masonry like brick or concrete. Always check manufacturer recommendations or test on a scrap piece if unsure.
Can I use these fixings in aerated concrete blocks?
These fixings are primarily designed for solid masonry. For aerated concrete, specific anchors or fixings designed for that material would be more appropriate to ensure adequate holding power.
What type of driver bit do I need?
You will need a TX (Torx) driver bit. The common sizes for this type of fixing are TX25 or TX30. Ensure you use the correct size to avoid stripping the head.
How many fixings are included in a pack?
This product is sold as a pack of 6 frame fixings.
Can these fixings be used for external doors?
Yes, they can be used for external frames in solid masonry. However, ensure the coating is not damaged, as prolonged exposure to weather could lead to corrosion over time.
What is the benefit of the winged design?
The wings on the fixing increase friction as it is tightened into the material, providing a more secure and stable hold compared to standard smooth fixings.
Troubleshooting
Fixing does not tighten or spin freely
The pilot hole may be too large, or the substrate material might be too soft or hollow. Ensure you have drilled the correct size pilot hole for solid masonry. If the hole is too large, you may need to use a larger fixing or a different anchoring method.
Countersunk head does not sit flush
The pilot hole may not be deep enough, or the frame material is too soft where the hole is drilled. Ensure the pilot hole is deep enough for the full length of the fixing. For frames, the pre-drilling should be done carefully to allow the head to countersink properly.
Difficulty inserting the fixing
The pilot hole may be too small, or there may be debris in the hole. Ensure the pilot hole diameter is appropriate for the fixing and clear any obstructions.
Fixing appears to be corroding
The protective coating may have been damaged during installation. For exposed applications, consider using stainless steel fixings or applying a protective sealant over the installed fixing head.
Pros and Cons
Pros
- Provides a secure and reliable hold for frame installations.
- Winged design enhances friction and grip in solid materials.
- Countersunk head allows for a neat, flush finish.
- Suitable for a range of frame materials (uPVC, timber, metal).
- Effective in various solid masonry substrates.
Cons
- Requires pre-drilling pilot holes, adding an extra step to installation.
- Not suitable for hollow or soft materials.
- Specific 8mm diameter may not fit all existing pre-drilled holes.
- Sold in packs of 6, which may be insufficient for large projects.
Setup, Compatibility & Care
Setup:
- Determine the appropriate pre-drilling size for your specific substrate material (consult fixing guides or test on a scrap piece if unsure). Typically, for 8mm fixings, a 6mm or 7mm pilot hole is recommended for concrete and brick.
- Drill pilot holes through the frame and into the solid substrate to the required depth, ensuring they are straight.
- Insert the Diall TX Countersunk Frame Fixing through the frame and into the pilot hole.
- Using a TX (Torx) driver bit, tighten the fixing until the frame is securely held and the countersunk head is flush with the frame surface. Do not overtighten.
Compatibility:
- Frame Materials: uPVC, timber, metal.
- Substrates: Concrete, blockwork, brickwork, stone (solid masonry).
- Tools: Requires a TX (Torx) driver bit (e.g., TX25 or TX30, depending on the fixing head size).
Care:
These fixings are designed for a permanent installation and do not require regular care. Ensure they remain tight and that there is no corrosion on the frame or surrounding material. For exterior use, consider that the steel may be prone to rust over time if the protective coating is damaged.