Prox Wood Construction Screw 4x40 mm TX20 Countersunk Head Partial Thread 20 pcs

The Prox Wood Construction Screw 4x40 mm TX20 Countersunk Head Partial Thread 20 pcs is a reliable fastener designed specifically for the assembly and installation of wooden structures. Manufactured to meet the EN 14592 standard, this wood construction screw ensures dependable performance in various carpentry and building tasks. It features a partial thread design that pulls wooden elements tightly together for a secure and stable joint without risking material damage or splitting.

Advantages

The screw is engineered with a countersunk head that allows it to sit flush with the wood surface, creating a smooth finish and eliminating the need for complex countersinking procedures. The integration of a TX20 Torx drive enables high torque transmission while significantly reducing the likelihood of cam-out and tool slippage during driving. The partial thread length provides optimal clamping force between connected timber components. Additionally, the specialized geometry helps prevent wood splitting, ensuring neat and durable results across multiple projects.

Suitable for

• Assembly of wooden frames and internal structures
• General carpentry and woodworking projects
• Installing wooden panels and trims
• Fastening timber elements where a flush surface finish is required

When it may not be suitable

This product may not be suitable for heavy-duty structural engineering applications that require thicker fasteners or specialized metal-to-wood connectors. It is also not recommended for direct use in highly corrosive environments or with treated lumber that demands specialized high-grade corrosion-resistant coatings unless additional protective measures are taken.

Key specifications

• Diameter: 4 mm
• Length: 40 mm
• Thread length: 25 mm
• Drive type: TX20 Torx
• Head type: Countersunk
• Thread type: Partial thread
• Standard compliance: EN 14592
• Quantity per pack: 20 pieces

How to use

Select a compatible TX20 screwdriver bit and insert it securely into your power driver or hand tool. Align the wood construction screw perpendicularly to the wooden surface and apply steady pressure while driving. The partial thread will pull the upper piece tightly against the receiving material. Ensure that the countersunk head rests completely level with or slightly below the wood surface to achieve the desired clean finish. Avoid over-tightening to prevent stripping the thread within the wood.

What to consider before purchase

• Verify that the 4 mm diameter and 40 mm length meet the dimensional requirements of your specific application
• Check whether a pack quantity of 20 pieces is sufficient for your project scope
• Confirm that a TX20 drive tool is available for installation
• Ensure the wood type and thickness are compatible with partial thread fasteners

Usage recommendations: Always pre-drill pilot holes when working with hard woods or near board edges to prevent splitting. Store the screws in a dry environment to protect them from moisture and corrosion prior to use.