Wood Screw Koelner/Rawlplug TS-5100 5x100 mm, countersunk head, TX drive

Koelner/Rawlplug TS-5100 5x100 mm is a wood screw with a countersunk (conical) head and TX (Torx) drive engineered for reliable mechanical fastening in timber and timber-based constructions. The 5 mm shank diameter and 100 mm length make it suitable for medium-duty connections where a flush finish is required after installation. The countersunk head sits level with the wood surface once driven, while the TX drive provides good torque transfer and reduces cam-out during installation.

Advantages

The screw offers secure pull-out resistance and consistent thread engagement in solid wood and common engineered wood products. The conical countersunk head allows for concealed finishes and neat joints without protruding heads. TX drive compatibility improves bit grip and enables faster, more controlled installation with powered drivers or manual Torx tools. The geometric proportions of diameter and length balance holding power and ease of insertion for typical carpentry and joinery tasks.

Suitable for

• Timber-to-timber connections in structural and non-structural carpentry
• Joinery, furniture assembly and wood framing
• Decking subframes and outdoor wooden structures when used with appropriate corrosion protection
• Repair and maintenance of wooden elements where a flush head is required

Key specifications

• Diameter: 5 mm
• Length: 100 mm
• Head type: Countersunk (conical) for flush finish
• Drive type: TX (Torx) for improved torque transfer
• Thread type: Wood screw thread designed for solid timber and common engineered wood

How to use

Pre-drill a pilot hole if working in hard or brittle wood to reduce splitting; pilot hole diameter should match the wood type and density. Position the screw so the countersunk head sits level with the surface and drive using a Torx bit in a hand screwdriver or powered driver set to an appropriate torque to avoid over‑driving. For through‑connections, ensure adequate penetration into the receiving member to achieve the necessary holding strength. When exposed to outdoor conditions, use screws with suitable corrosion resistance or additional protective coatings.

Usage recommendations

For best results, select a Torx bit that matches the TX profile to minimize cam-out and use a clutch on powered drivers to control depth. Where structural load or exposure to moisture is a factor, pair the screw with appropriate corrosion-resistant fasteners or surface treatments and follow local building codes for fastening patterns and edge distances.