How to Install a Concrete Screw

A concrete screw is a type of screw that has a special thread for tapping holes in concrete. Typically blue in color, they come with a Phillips flat head for flush applications and a hex washer head for other uses. The screw can be removed after installation. Be careful not to re-insert the screw too quickly, though, because repeated removal and re-insertion may strip out the hole.

To install a concrete screw, drill a pilot hole 1/4 inch deeper than the actual screw length. The reason for this is that if the pilot hole is not deep enough, it can shear off the screw head. It is also important to drill at least one inch deep in the concrete to avoid causing the screw to bottom out or become stuck.

Different types of concrete screws have different characteristics. For instance, the JC2 Plus has a higher load-bearing capacity than its predecessor, and it has an optimised tip geometry. Unlike its predecessor, this newer model also comes in two embedment depths per size, allowing it to be used in demanding applications. It is also available in a newly introduced size of 14 mm.

Another advantage of a concrete screw is that it is one of the simplest ways to fasten masonry to concrete. Unlike wood screws, it doesn't require hammering, shields, or anchors. In fact, the concrete screw is extremely easy to install, as all you need to do is drill a hole, clean the hole, and insert the screw. The serrated cutting thread of a concrete screw penetrates the concrete and provides tight fixing.