Wood screw Koelner/Rawlplug TS-4045 4x45 mm, countersunk head, TX drive

Koelner/Rawlplug TS-4045 4x45 mm is a wood screw designed for fastening wooden elements where a recessed finish is required. The screw has a countersunk conical head that sits flush with the wood surface after installation and a TX (Torx) drive that provides stable bit engagement and reduced risk of cam-out. It is intended for carpentry, joinery and general woodworking tasks that need reliable mechanical fastening and a neat appearance.

Advantages

The countersunk head allows for a flush or hidden finish, improving the final appearance of assembled wooden parts. The TX drive minimizes screwdriver slipping and enables higher torque transfer compared with traditional Phillips or slotted drives. Precision threading and consistent dimensions make the screw suitable for repeated use in furniture assembly, frame construction and trim work.

Suitable for

• Fixing timber to timber in furniture and cabinet making
• Joining framing elements in light construction
• Securing trims, moldings and baseboards
• General woodworking repairs and DIY carpentry

Key specifications

• Diameter: 4 mm
• Length: 45 mm
• Head type: countersunk (conical)
• Drive type: TX (Torx)
• Material: steel (suitable for typical indoor woodworking applications)
• Thread: wood thread for strong pull-in and holding power in timber

How to use

Pre-drill a pilot hole appropriate for 4 mm screws in dense or knotty timber to reduce splitting; for softer woods a pilot hole may not be required depending on application. Use a Torx bit that matches the TX drive to ensure full engagement and avoid damaging the head. Insert the screw straight into the joint and drive it until the countersunk head is flush with or slightly below the wood surface. If a fully concealed finish is required, sink the head slightly and fill the recess with wood filler or a plug.

Usage recommendations

Choose screw length and quantity according to load and joint type; for structural or load-bearing applications consult relevant standards or a professional. Store screws in a dry place to avoid surface corrosion and select corrosion-resistant coatings if installing in humid environments or outdoors.