Best Screws For Concrete Posts

For example a 3 4 diameter anchor has a minimum embedment of 3 1 4 and a 1 4 anchor has a minimum embedment of 1.

Best screws for concrete posts.

The best holding values are achieved when the concrete is hard and the embedment into the concrete is deep. Feature alternating high and low threads with diamond cut notches for extra holding power. Use a thin drill bit otherwise the lag screws won t secure properly the post. To bolt into concrete you ll need a hammer drill a titanium or carbide tipped drill bit and wedge anchors.

You don t have nuts and washers to fuss with. Use enough water to saturate the dry mix. May be sealed to provide protection against corrosion. Step 3 pour water into the dry mix and allow it to soak in.

Two 50 pound bags of fast setting concrete will set a 4 inch by 4 inch or a 4 inch diameter post in a 10 inch diameter hole 2 feet deep. These are great for hanging 3 4 in. The larger the diameter the higher holding values the anchor will have. Concrete concrete block mortar and brick.

Furring strips and metal brackets and straps. Clean any concrete dust out of each hole you drill with a vacuum cleaner or wire brush. Best for attaching furring strips doors and electrical boxes in concrete brick stucco or blocks. Just drill the hole to the right depth and hammer it home.

Use 1 1 2 lag screws to secure the post into position. Consequently the last step when anchoring a post to concrete is to drill pilot holes with a drill machinery through the holes in the post anchor.