Wood screw Koelner/Rawlplug TS-5090 5x90 mm, countersunk head, TX drive

Koelner/Rawlplug TS-5090 5x90 mm is a wood construction screw with a conical countersunk head and a TX (Torx) drive designed for fastening timber and wooden structures. The screw’s geometry and thread profile suit both load-bearing and non-load-bearing carpentry tasks, allowing secure connections between joists, beams, planks and other wooden elements when appropriate pilot holes or drill settings are used for neat countersinking and reliable thread engagement.

Advantages

The countersunk head ensures a flush finish when installed, reducing the need for additional finishing work. The TX drive provides better torque transfer and reduces cam-out compared with conventional drives, improving efficiency during installation. The dimensions and thread form are designed to deliver good holding power in solid wood and common structural timber, enabling straightforward assembly of wooden frames and components.

Suitable for

• Joining timber elements in structural and non-structural carpentry
• Fixing joists, battens and subframes
• Assembling wooden furniture and outdoor wood constructions (with suitable corrosion protection)
• Timber repairs and retrofit connections where a flush head finish is required

Key specifications

• Nominal diameter: 5 mm
• Length: 90 mm
• Head type: countersunk (conical)
• Drive type: TX (Torx)
• Application: wood-to-wood connections

How to use

Mark and clamp the wooden parts to ensure alignment. Drill pilot holes when recommended for the wood type and screw length to avoid splitting, particularly near edges and in hardwoods. Countersink the hole to the required depth so the conical head sits flush with the surface. Use a Torx driver bit matched to the TX drive to apply steady torque; start at low speed and increase as the thread engages. Ensure the screw is driven until the head is flush and the connection is tight but avoid over-torquing that could strip the drive or damage the wood.

Usage recommendations

For exterior or high-humidity applications, select screws with appropriate corrosion-resistant coating or material. When working with engineered wood or laminated timber, check manufacturer guidance for recommended pilot hole diameters and embedment depths. Use appropriate personal protective equipment and power-tool settings for safe and accurate installation.