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B&Q£9.18Visit shop B&Q - Premium Confirmat Cabinet & Furniture Assembly Screws5.0 X 40mmPack Of 10
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The Diyuk Confirmat Cabinet & Furniture Assembly Screws are designed for professional cabinet makers and DIY enthusiasts who demand structural integrity in engineered wood projects like MDF, particleboard, and chipboard. These specialized fasteners offer industry-leading grip strength and joint rigidity that effectively prevent the wobbling common in standard flat-pack furniture, though they do require precise pre-drilling to ensure a split-free installation.
| Brand | Diyuk |
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These screws are specifically engineered for composite materials like MDF and particleboard. They are not recommended for solid hardwoods.
Yes, a three-step Confirmat bit is required to accommodate the shoulder, threads, and head of the screw.
Because the threads are coarse and deep, the screws can be removed and re-inserted several times without significant loss of holding power.
The shoulder acts as a dowel, providing shear strength and ensuring the two pieces of wood are locked together without gaps.
Yes, this is a 5.0 x 40mm screw, ideal for standard 18mm thickness engineered wood panels.
The pilot hole may be too large. Use a smaller bit or use a wood filler/dowel plug to reset the material before re-drilling.
Ensure you are using the correct diameter Confirmat bit. Standard twist bits do not create the necessary relief for the screw shoulder.
Adjust the depth stop on your drill bit to ensure the countersink is deep enough for the screw head to rest level with the surface.
To achieve professional results, pre-drilling is not optional—it is mandatory. Use a specialized three-step Confirmat drill bit that allows for the shaft, the threaded portion, and the head counter-sink to be cut in a single pass.
