Set of Koelner/Rawlplug construction screws, size 3.0 x 35 mm, partial thread with a countersunk head. The pack contains 34 screws designed for joining wood and light construction elements where the fastener head needs to sit flush with or below the surface. The partial thread profile provides strong clamping near the screw head while allowing the shank to act as a dowel for alignment.
Advantages
These construction screws combine a conical countersunk head for a flush finish with a partial thread that pulls materials together securely. The dimensions (3.0 x 35 mm) make them suitable for common carpentry and assembly tasks where compact fasteners are required. Supplied in a practical pack of 34, they are ready to use for multiple small projects and on-site adjustments.
Suitable for
- Joining wooden boards and panels
- Light timber framing and trim work
- Fixing brackets and small fittings where a countersunk head is preferred
- General carpentry, DIY and assembly where flush finish is required
When it may not be suitable
These screws are intended for light to medium-duty joining in wood and similar materials and are not designed for heavy structural loads, masonry, or metal-to-metal primary connections. They may not be appropriate where corrosion resistance for outdoor or marine exposure is required unless a corrosion-resistant coating or stainless steel variant is specified.
Key specifications
- Length: 35 mm
- Shank/diameter: 3.0 mm
- Thread type: partial (incomplete) thread
- Head type: countersunk (conical) head
- Pack quantity: 34 screws
How to use
Pre-drill a pilot hole appropriate for the 3.0 mm screw diameter and the density of the material to prevent splitting. Position the components to be joined, insert the screw so the countersunk head sits flush with the surface, and drive with a compatible screwdriver or driver bit at moderate speed and torque. Use clamps to hold parts aligned while fastening to ensure accurate mating. For best results in hardwoods, increase pilot hole diameter slightly.
What to consider before purchase
- Check material compatibility—suitable for wood and light construction materials
- Verify if corrosion resistance is needed for outdoor use
- Ensure 35 mm length and 3.0 mm diameter suit your joint depth and material thickness
Usage recommendations
For consistent, secure joints in carpentry tasks, use correctly sized pilot holes and a matched driver bit. When a flush finish is required, countersink or use the screw directly so the head sits level with the surface. Store the pack in a dry place and use screws of appropriate length and material for outdoor or load-bearing applications.
