Prox Wood Construction Screw 4.5x70 mm Partial Thread TX20 Countersunk Head 25 pcs

The Prox Wood Construction Screw 4.5x70 mm Partial Thread TX20 Countersunk Head is a reliable fastening solution designed for secure and stable timber assembly in various construction and woodworking projects. Measuring 4.5 mm in diameter and 70 mm in length with a 40 mm partial thread, this screw provides strong clamping force to pull wooden elements tightly together. The countersunk head design allows the screw to flush-mount smoothly with the wood surface without requiring extra countersinking work. Equipped with a TX20 Torx drive, it ensures efficient torque transfer while minimizing bit slip during installation. Complying with the EN 14592 standard, this product delivers dependable performance for professional and DIY tasks alike. Each package contains 25 pieces.

Advantages

This wood construction screw offers numerous benefits for timber installation. The partial thread design ensures that connected wooden boards or beams are pulled firmly against each other, creating a gap-free and rigid joint. The countersunk head sinks neatly into the material, resulting in a clean, flush finish that is ready for further surface treatment or finishing. The TX20 Torx drive significantly improves the driving experience by allowing higher torque application and preventing the screwdriver bit from slipping, which protects both the screw head and the tool. Additionally, the screw geometry helps reduce the risk of wood splitting during insertion, ensuring structural integrity.

Suitable for

• Timber framing and wooden structure assembly
• Securing wooden panels, boards, and beams
• General carpentry and woodworking projects
• Interior and exterior wooden construction works complying with standard requirements

When it may not be suitable

This screw is not designed for heavy-duty metal-to-metal fastening or direct masonry and concrete installation without appropriate wall plugs. It may also be unsuitable for extremely dense hardwoods if pilot holes are not pre-drilled, as the 4.5 mm thickness requires proper preparation in very hard materials.

Key specifications

• Diameter: 4.5 mm
• Length: 70 mm
• Thread length: 40 mm
• Thread type: Partial thread
• Drive type: TX20 Torx
• Head type: Countersunk head
• Standard compliance: EN 14592
• Quantity per package: 25 pieces

How to use

To achieve the best results, select the appropriate driver bit size matching the TX20 Torx recess. Align the wooden elements to be joined and position the screw perpendicularly to the surface. Drive the screw in at a steady speed until the countersunk head is fully flush with the wood surface. For dense timber or near board edges, pre-drilling a pilot hole is recommended to prevent wood splitting and ensure precise alignment. Ensure the correct torque is applied to avoid over-tightening.

What to consider before purchase

• Verify that the 4.5 mm diameter and 70 mm length match the thickness of the timber elements you plan to join.
• Check if the 40 mm partial thread length provides sufficient grip for your specific application.
• Ensure you have a compatible TX20 driver bit for your power tool or screwdriver.
• Calculate the total quantity needed for your project, keeping in mind that each pack contains 25 pieces.

Usage recommendations

Always store the screws in a dry environment to prevent corrosion before installation. Use a power tool with adjustable torque control to prevent stripping the screw head or over-driving into the timber. For outdoor applications, ensure the surrounding wood and environmental conditions match the corrosion resistance level of the fasteners.