Concrete screw Koelner/Rawlplug M6x75 mm hex head, pack of 10

Koelner/Rawlplug concrete screw M6x75 mm with a hex head is a machine-driven fastener designed for direct fixing into concrete and masonry. Supplied as a pack of 10, this screw is intended for fastening fixtures, brackets and profiles where a reliable mechanical connection to solid substrates is required. The hexagonal head allows installation with a socket or impact driver, and the threaded shank is shaped to cut into the substrate once a correct pilot hole is made.

Advantages

The Koelner/Rawlplug concrete screw provides a strong, removable connection without the need for chemical anchors. Its hex head enables fast application with standard power tools, while the thread geometry is optimized for engagement in concrete and many types of masonry. Supplied in a compact pack of 10, these screws are convenient for small to medium installation jobs and replacements.

Suitable for

• Fixing light to medium-duty fixtures to solid concrete
• Mounting metal brackets, channels and profiles
• Securing electrical boxes and conduit clips to masonry walls
• Temporary or permanent installations where removability is required

When it may not be suitable

This concrete screw is not intended for use in hollow or very weak blockwork without additional measures; such substrates may require anchors designed specifically for hollow materials. It is also not a substitute for heavy-duty anchors in applications that demand very high load capacities, or where design codes require chemical or through-bolt solutions.

Key specifications

• Screw diameter: M6
• Length: 75 mm (overall length)
• Head type: Hexagonal head for socket or driver use
• Material/finish: metal fastener suitable for concrete and masonry (refer to manufacturer for exact coating)
• Pack quantity: 10 pieces

How to use

Select the correct concrete drill bit and drilling depth according to the screw length. Drill a clean pilot hole in the concrete or masonry, remove dust and debris, then align the screw and drive it with a socket or impact driver until the head sits flush or at the required position. Do not over-torque; follow the recommended installation torque from the manufacturer and ensure edge and spacing distances comply with structural requirements.

What to consider before purchase

• Substrate type: ensure the wall or slab is solid concrete or suitable masonry
• Load requirements: verify that an M6 screw meets the static and dynamic loads for your application
• Drill size and depth: match drill bit diameter and hole depth to the screw length
• Corrosion environment: confirm material finish is appropriate for indoor or outdoor use

Usage recommendations

For reliable performance, drill a clean pilot hole, clear dust thoroughly, and use the correct socket size and torque setting. When fixing near edges or in clusters, maintain recommended spacing and distances to avoid substrate cracking. For critical or high-load installations consult the manufacturer’s technical data and, if required, use a specialist anchoring solution.