Wood screw Koelner/Rawlplug TS-5020 5x20 mm, countersunk head, TX drive

Koelner/Rawlplug TS-5020 is a wood screw sized 5 x 20 mm with a countersunk conical head and a TX (Torx) drive. It is intended for fastening wooden parts where a flush, even surface is required. The screw thread is designed for wood applications and the Torx drive reduces slippage and allows more efficient torque transfer during installation.

Advantages

The countersunk head enables the screw to sit flush with or below the wood surface, creating a smooth finish suitable for visible joinery. The TX drive improves driver bit engagement compared with classic Phillips or slotted drives, reducing cam-out and making installation faster and more reliable. Its compact 5 x 20 mm size is appropriate for light to medium wood assemblies and furniture fittings where a short grip length is needed.

Suitable for

• Furniture assembly and repair
• Carpentry and joinery tasks
• Interior wooden fixtures and trim
• Light wood construction and panel fastening

Key specifications

• Nominal diameter: 5 mm
• Length: 20 mm
• Head type: Countersunk (conical) head for flush finish
• Drive type: TX (Torx) for improved torque transfer
• Material and coating: suitable for standard interior wooden applications (verify for specific corrosion resistance requirements)

How to use

Select an appropriate TX driver bit that matches the screw drive size. For neat results in hardwood, pre-drill a pilot hole sized to the screw core diameter to prevent splitting; in softwoods a pilot hole may not be necessary but is recommended for precise alignment. Place the screw head into the countersunk recess or start driving at low speed, increasing torque gradually until the head is flush with the wood surface. Avoid over-torquing to prevent head damage or stripping.

Usage recommendations

Use these screws indoors or where ambient conditions do not demand specialized corrosion protection. For external or high-humidity applications, choose screws with appropriate corrosion-resistant coatings. Match screw length to the combined thickness of materials to ensure sufficient engagement without protrusion.