Installing Lag Bolts Into Concrete

A lag screw is the poor man s concrete anchor.

Installing lag bolts into concrete.

Regular drill bits will dull too quickly. For example if you wanted to install a 2 x 4 to the lag shield you would need to make sure the lag screw had 1 1 2 of clearance and then about another 1 to 1 1 2 to install into the shield. To bolt into concrete you ll need a hammer drill a titanium or carbide tipped drill bit and wedge anchors. This means you would need roughly a 3 lag screw to complete this.

They are thicker than ordinary screws have a hexagonal head and they are used in a myriad of materials to create structural integrity where it is needed most. Clean any concrete dust out of each hole you drill with a vacuum cleaner or wire brush. Be sure to have plenty of extra bits on hand and use a can of compressed air or a blower to clean dust away from the drilled hole. In this video i will show you how to drill into brick concrete and cement with a drill and also how to attach fix mount or anchor into a brick concrete or.

The first thing to do is put your drill into hammer mode and drill a hole in the concrete. Home centers and hardware stores stock concrete screws in two diameters 3 16 in. Next make sure you have a lag screw long enough for the installation. Use a hammer drill when installing anchors into hard surfaces such as stone concrete and brick.

The pilot hole serves as a guide for the. Diameter screws are plenty strong for most home tasks like installing furring strips screwing down walls to concrete floors and attaching hardware to block or brick. The fixture is then placed over the lag shield inserting a lag screw through the fixture and into the lag screw. Use tapcon concrete screw anchors for installing sill plates electrical equipment furring strips and many other applications that require fastening into brick block.

All of this information should assist in the safe and correct installation and use of concrete anchors and fasteners no matter what your application may be. Screws for most light to medium duty tasks. You will need to drill a pilot hole when using any type of concrete anchor. Tapcon concrete screw anchors draw from its unique ability to tap its own threads into concrete making it an excellent alternative to expansion anchors plugs and lag shields.

Drill a hole in the base material with a hammer drill and a correctly sized carbide drill bit for the diameter lag shield anchor you are using.