Anchor Bolts Resource


Wedge Anchors Are Structural Fasteners

Wedge anchors are a type of anchor bolt that can be used to anchor steel directly to concrete. They are technically expansion anchors, which are comprised of multiple components that include a threaded rod and a clip end. These parts work together to ensure a secure fit within concrete that facilitates the installation of various steel structural parts. Wedge anchors are usually also combined with a comparably sized washer and nut and packaged as part of a complete fastener assembly. They may be known as Trubolts, Kwick bolts, power studs, and wedge bolts. These specifics may vary based on the region and the manufacturer.

Carbon steel and stainless steel are two materials commonly used to make wedge anchors. Stainless steel wedge anchors are inherently corrosion resistant. This property can also be added to carbon steel anchors with galvanization and zinc plating. Galvanized wedge anchors and zinc-plated wedge anchors can be used in some potentially corrosive environments thanks to the addition of these protective treatments, but for applications that will be subject to moisture and temperature fluctuations, stainless steel will more reliably resist oxidation.

Expansion wedge anchors are meant to be installed into pre-drilled holes. When dealing with concrete, a hammer drill and masonry bit can be used to create a hole in the concrete. The hole depth and diameter should be comparable to the dimensions of the wedge anchor. Once the hole has been drilled, any particles or debris should be cleared prior to the insertion of the anchor. This step will help to ensure a reliable and lasting installation.

The wedge anchor is then set into place using an appropriate setting tool. As the anchor is tightened, the end clip expands and maintains secure tension within the concrete. They can then be used to permanently attach structural columns, concrete pillars, and footings. They may also be used for permanent mounting of appliances and equipment, as well as various hardware, brackets, mounts. 

Wedge anchors are standard construction components that can be easily sourced from most fastener distributors and hardware suppliers.

What Are Wedge Anchors Used For?

Wedge anchors are structural fasteners that are used to secure components to concrete surfaces and other solid masonry material. They facilitate permanent installation of heavy-duty structural elements, including columns and pillars, as well as various equipment and appliance mounts, brackets, wall and ceiling hardware, and more.  

How Can Concrete Wedge Anchors Be Removed?

Wedge anchors cannot be removed by simply disassembly as they are meant to be permanent fasteners. Fully removing them would require excavation of the material in which they are embedded. The exposed portion of the anchor, however, can be cut or ground so the former installation is then flush with the surface. The wall, ceiling, or floor can then patched over to smooth the appearance     

How Are Wedge Anchors Measured?

Wedge anchors are measured mainly by length and diameter. The length measurement refers to the entire length of the bolt. The diameter refers to the measurement across the exterior of the threads. 

Are Expansion Anchors The Same As Wedge Anchors?

Expansion anchors can be another term for wedge anchors. Either term may be used interchangeably to refer to post-installed anchor bolts that are held in place by triggering an expansive force. They feature what’s called a clip or expansion sleeve, which expands as the anchor is tightened in place. This secures the installation permanently within the concrete or other dense masonry material. The threaded end will protrude from the anchor and a hex nut is then used to tighten the bracket, mount, or other hardware in place.