Screw Bolt - Galvanised - 12 x 150mm - 2pcs

What is a Galvanised Screw Bolt?
A screw bolt is a high-strength, heavy-duty masonry anchor designed to thread directly into a pre-drilled hole in concrete or stone. Unlike traditional expansion anchors, it creates its own thread in the material, providing a secure mechanical fix without the need for a separate sleeve or nut.

What are the dimensions of these bolts?
Each bolt has a 12mm diameter and a 150mm length. This length is ideal for applications requiring deep embedment or for fastening thicker materials to a concrete base.

How many bolts are included?
This specific pack contains two (2) bolts, making it a practical choice for smaller installation tasks or repair work.

What does "Galvanised" mean for this product?
The bolts are finished with a hot-dipped galvanised coating. This provides superior corrosion protection compared to standard zinc plating, making these bolts suitable for long-term outdoor use and exposure to the elements.

What size drill bit is required?
To install a 12mm screw bolt, you typically require a 12mm masonry drill bit. Because the bolt cuts its own thread, the hole must be exactly the same diameter as the bolt shank for the mechanical interlock to work correctly.

Are these bolts removable?
Yes. One of the main advantages of screw bolts is that they can be completely unscrewed and removed without leaving a protruding stud or sleeve in the concrete. This makes them ideal for temporary fixtures or areas where the layout may change.

Can they be used near the edge of a concrete slab?
Yes. Because screw bolts do not rely on expansion force to grip (which can crack concrete), they can generally be installed closer to edges than traditional wedge or expansion anchors.