Wood construction screw Koelner/Rawlplug TS-5070 5x70 mm conical head TX drive

Wood construction screw Koelner/Rawlplug TS-5070 5x70 mm conical head TX drive is a fastening fastener designed for joining timber elements in construction and carpentry. The 5x70 mm dimension provides sufficient length for common framing and decking applications while the conical (countersunk) head ensures a flush finish in wooden surfaces. The TX (Torx) drive reduces cam‑out and allows higher torque transfer for secure thread engagement and reliable clamping of joints.

Advantages

The screw combines a countersunk head for discreet installation with a Torx drive for improved bit retention and efficient torque application. Its thread profile is optimized for wood to provide strong holding power and minimize splitting when used with appropriate pilot holes or pre‑drilling in hardwoods. The geometry and length make it suitable for structural assemblies where a recessed head is required for subsequent surface treatment or covering.

Suitable for

• Framing and structural timber connections
• Decking boards and subframe attachment
• Timber cladding and exterior woodwork (with appropriate corrosion protection)
• Joinery, furniture assembly and general carpentry tasks

Key specifications

• Nominal diameter: 5 mm
• Length: 70 mm
• Head type: conical / countersunk
• Drive type: TX (Torx)
• Intended material: wood and timber materials

How to use

Select an appropriate Torx bit matching the screw drive. For dense or hardwood, mark and drill a pilot hole of suitable diameter and depth to reduce the risk of splitting. Position the screw perpendicular to the timber surface and drive at steady speed until the head sits flush with the wood. Avoid over‑tightening to prevent crushing the surrounding material; if a hidden or finished surface is required, countersink depth should be checked before final tightening.

Usage recommendations

Use screws of this type with appropriate corrosion resistance for outdoor applications. Pre‑drill when working near board edges or in hardwood species. Store screws dry to prevent corrosion and use the correct Torx bit size to ensure efficient installation and minimize bit wear.