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How to Install a Wedge Anchor into Concrete?

How to Install a Wedge Anchor into Concrete?

Issue Time:2021-02-26
How to Install a Wedge Anchor into Concrete?
A wedge anchor is a mechanical type expansion anchor consisting of four parts: a threaded anchor body, an expansion clip, a nut, and a washer. It’s just designed for use in solid concrete, providing the highest and most consistent holding values of any mechanical type expansion anchor.

Installing a wedge anchor into concrete can be accomplished by following the steps below.

1. Assemble the right tools

1)Create a hole in the concrete by using a hammer drill.

2)Use a hammer drill set in the hammer and rotation mode, so as to ensure proper hole dimensions and make drilling the hole easier.

3)If without a hammer drill, it will be difficult to drill a hole, and the holding value of the anchor may be decreased once an wedge anchor installed.

2. Determine the sizes

1)Determine the minimum length of wedge anchor to use by adding the thickness of the material to be fastened to the minimum embedment for the diameter of the anchor to be installed with space for the nut and washer.

2)These anchors can be installed at deeper embedments than the minimum embedding depth, providing better holding values in most cases.

3)Use a bit as the same diameter of the anchor being installed.

4)Chuck an ANSI standard carbide tipped masonry bit into the hammer drill.

5)Use ANSI standard bits to ensure proper hole tolerance between the hole diameter and anchor diameter.

6)Hole tolerance is critical to ensure minimum holding values.

3. Drill the hole

1)Drill a hole that is slightly deeper (a minimum of 1/2”) than the expected embedding depth.

Make sure that the minimum embedding depth for the diameter of the anchor is met. The minimum embedding depth after the anchor is set is as follows:

Minimum Embedding Depth by Diameter of Wedge Anchor

Wedge Anchor Diameter

Minimum Embedding Depth



















4. Check the depth

1)Make sure the depth of the hole is correct. Set the depth gauge on the hammer drill or place tape on the bit at the required depth.

2)Make sure that the bit is in the retracted position when placing the tape on the bit or setting the depth gauge. The retracted position is when the bit is at its most inward position in the chuck.

5. Clean the hole

1)With a wire brush, vacuum, or compressed air, clean all dust and debris in the hole to ensure proper holding values once the anchor is installed.

2)Clean the hole with a wire brush, and vacuum the hole. Repeat this operation several times, then the hole will be clean and ready for installation.

6. Install the wedge

1)It’s known that each box of anchors comes with the correct number and size of nuts and washers. Take one washer and place it over the threaded end of the anchor body.

2)Then take one nut and thread it clockwise onto the anchor body until the top of the nut is flush with the top of the anchor body, protecting the threads of the anchor during installation.

3)Install the anchor through a hole in the fixture, or install directly into the concrete, and then place the fixture over the anchor.
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