Drilling Lag Bolts Into Concrete

Start the drill and push forward with firm but not heavy pressure.

Drilling lag bolts into concrete.

The lag is an expanding insert with a jacket of hard metal that grips the sides of the drill hole. Run the drill at a slow to medium speed and pull the drill out periodically to help remove concrete dust from the hole. How concrete lag bolts work. Drill a hole into the material that is smaller than the diameter of the lag screw.

Place the fixture over the concrete and line up the holes. To the thickness of the material you re attaching to get the minimum length of screw needed. Select a screw length to penetrate the concrete at least 1 in. Before drilling you will also want to measure the length of the lag shield and drill down the length plus a little extra space.

Slide a washer and nut over the threaded end of the anchor. Replace the drill in the pilot hole ensuring that the drill is perpendicular surface. The smaller the pilot hole the more effective the lag screw will be. Attaching a fixture with wedge anchors 1.

Line up your fixture or whatever you want to attach to the. You also do not have to go very deep. Tools needed to drill into concrete it is important to use a hammer drill or rotary hammer drill in concrete applications. The process involves drilling appropriate sized holes into concrete to the proper depth using a hammer drill with a masonry bit cleaning out the drilled holes to remove the concrete debris.

The nut and washer will help protect the anchor and. In hard dense materials like concrete or stone this minimum 1 in. Next take a hammer and tap the lag shield down into the hole you ve drilled until its flush with the surface. A standard drill is insufficient when drilling into concrete because the drilling rotating action is not enough to break the concrete.

The center part of the lag is made out of a softer metal like zinc mixed with soft iron or lead. 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. They are made specifically for the installation of lag screws into masonry materials. If you encounter an.

Lag bolts for concrete are used with an anchor or insert called a lag.