Prox Wood Construction Screw 4x70mm Partial Thread Countersunk Head TX20 250pcs

The Prox Wood Construction Screw 4x70mm Partial Thread Countersunk Head TX20 is a professional fastening solution designed for reliable performance in various woodworking and building projects. These wood construction screws provide a secure and stable connection, ensuring structural integrity across multiple applications. Featuring a partial thread, the design facilitates the tight joining of wooden elements by drawing the materials firmly together. The specialized geometry helps to minimize wood splitting during installation, reducing the need for pre-drilling in certain softwoods. Each screw is manufactured to comply with the EN 14592 standard, ensuring standardized quality and reliability for construction tasks. Supplied in a convenient pack of 250 pieces, these screws are suited for both professional contractors and DIY enthusiasts undertaking timber assembly.

Advantages

The countersunk head design allows the screw to sit flush with the wooden surface, delivering a clean and professional finish without requiring countersink pre-drilling. The TX20 Torx drive system enables efficient torque transfer from the tool to the fastener, significantly reducing bit slippage and cam-out during high-speed driving. The partial thread ensures that joined timber components are pulled tightly against one another for a robust connection. Furthermore, the specialized point and thread design work together to reduce material stress, minimizing the risk of splitting the wood near edges.

Suitable for

• Woodworking and furniture manufacturing
• Timber frame construction and assembly
• General carpentry and renovation tasks
• Securing wooden panels and boards

When it may not be suitable

These screws are not recommended for fastening metal, masonry, or concrete structures, as they are specifically engineered for wood-based materials. Additionally, they may not be suitable for outdoor applications involving treated woods that require specialized corrosion-resistant coatings unless verified for specific environmental exposure.

Key specifications

• Diameter: 4 mm
• Length: 70 mm
• Thread length: 40 mm (partial thread)
• Head type: Countersunk head
• Drive type: TX20 Torx
• Standard compliance: EN 14592
• Quantity per pack: 250 pieces

How to use

Select a compatible TX20 screwdriver bit and insert it securely into your power drill or driver. Align the wood construction screw perpendicularly to the wooden surface where the joint is to be made. Drive the screw smoothly into the material at a steady speed, allowing the partial thread to pull the wooden elements together. Continue driving until the countersunk head is completely flush with or slightly below the wooden surface. Ensure that excessive torque is avoided to prevent stripping the screw head or damaging the surrounding wood.

What to consider before purchase

• Verify that the 4 mm diameter and 70 mm length match the thickness of the timber elements being joined
• Ensure you have a compatible TX20 driver bit available for installation
• Check the wood type and thickness to determine if pre-drilling is necessary
• Confirm that the pack size of 250 pieces meets the requirements of your project

Usage recommendations: Store the screws in a dry environment to prevent moisture exposure before use. Always wear appropriate personal protective equipment, such as safety glasses, when operating power tools for fastening applications.