Concrete screw Koelner/Rawlplug M6×75 mm conical head, pack 10 pieces

Concrete screw Koelner/Rawlplug M6×75 mm conical head, pack 10 pieces is a medium-duty mechanical fastener designed for direct fixing into concrete and masonry. The conical (countersunk) head allows the screw to sit flush with or below the surface of thin fixtures and profiles. Supplied in a pack of 10, these M6×75mm screws are intended for applications where a reliable threaded anchor is required without the use of separate expansion anchors, provided correct pilot holes and installation technique are used.

Advantages

The Koelner/Rawlplug concrete screw offers straightforward installation with a self-tapping thread that engages masonry when driven into a pre-drilled hole. Its conical head provides a neat finish for fixtures and reduces protrusion, while the metric M6 thread and 75 mm length deliver sufficient embedment for medium-duty loads. Packaging in a 10-piece pack makes it easy to store and use for multiple small to medium projects.

Suitable for

• Fixing metal brackets and profiles to concrete or solid masonry
• Attaching electrical boxes, conduit clips, or small equipment mounts
• Mounting timber battens or subframes where a countersunk finish is required
• General repair and renovation tasks in residential and commercial buildings

When it may not be suitable

These screws are intended for solid concrete and similar masonry substrates and rely on correct pilot hole diameter and depth for full performance. They are not suitable for hollow or perforated blocks unless used with an appropriate sleeve or anchor designed for hollow substrates. For heavy structural loads or where certified dynamic or seismic anchoring is required, a purpose-designed heavy-duty anchor system should be chosen.

Key specifications

• Thread size: M6
• Length: 75 mm
• Head type: conical (countersunk) head
• Material: corrosion-resistant metal (manufacturer specification)
• Pack quantity: 10 pieces

How to use

Mark the fixing position and drill a pilot hole in the concrete or masonry to the recommended diameter and depth for an M6 concrete screw. Clean the hole of dust and debris before installation. Place the fixture so the head can sit flush and drive the screw into the hole using an appropriate driver bit and controlled torque to engage the thread. Stop once the head is flush or countersunk to the desired depth; avoid over-torquing to prevent damage to the substrate or screw.

What to consider before purchase

• Confirm substrate type (solid concrete or solid masonry) and suitability for direct screw fixation
• Verify required pilot hole diameter and drilling depth for M6×75 mm screws
• Assess load requirements to ensure medium-duty performance meets your needs
• Consider corrosion resistance requirements for outdoor or humid environments

Usage recommendations

Use appropriate personal protective equipment when drilling. For best results, follow the manufacturer’s installation guidance for pilot hole dimensions and torque limits, and test a sample fixing before full installation to confirm performance in your specific substrate.