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B&Q£11.19Visit shop B&Q - Countersunk Wood Screws 5.0 X 50mm Serrated Edge Prevent Splitting Pz2 200Pc
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This guide is for DIY enthusiasts and professionals working with wood, chipboard, and fiberboard. The AB Tools Countersunk Wood Screws offer a secure and clean join with features that prevent splitting and material jacking. A potential limitation is their unsuitability for concrete or brick applications. This pack includes 1000 screws, each measuring 5.0mm x 50mm, designed with a serrated edge, quick-start cutting point, knurled shank, and double countersunk head for improved performance and finish.
| Brand | AB Tools |
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The serrated edge significantly reduces the risk of the wood splitting when the screw is driven in, especially near the edge of the material.
The zinc coating offers protection against corrosion, making them suitable for protected outdoor use. For exposed conditions, consider stainless steel or coated screws designed for harsher environments.
You will need a PZ2 Pozi drive bit. Using the incorrect type of bit can lead to cam-out and damage to the screw head or the bit.
Often, pre-drilling is not necessary due to the quick-start cutting point and coarse thread, especially in softer woods. However, for very hard woods or to ensure precise placement, a pilot hole may be beneficial.
Jacking occurs when joining two pieces of timber, and the screw pushes the top piece upwards. The knurled shank on these screws helps to prevent this by clearing the hole and allowing the top piece to sit flush.
Yes, these screws are suitable for a variety of composite materials including MDF, chipboard, and fibreboard, thanks to their coarse thread design.
The main difference is the quantity. This pack contains 1000 screws, while the other variant contains 200 screws. The dimensions and features of the screws themselves are identical.
Ensure you are using a clean, well-fitting PZ2 Pozi drive bit. Apply firm, consistent downward pressure while driving the screw.
The serrated edge is designed to prevent this. If splitting occurs, consider a slightly larger pilot hole or ensure the screw is not too close to the edge of the material.
The knurled shank should prevent this. Ensure the knurled section is engaged in the material and that you are driving the screw straight.
Pre-drilling a pilot hole can help. Ensure the drill/driver is held perpendicular to the surface.
Setup:
Compatibility:
Care:
