FASTENERS 101™

Anchor FAQ

Frequently Asked Questions (FAQ) About Concrete Anchors

Anchors FAQs

Quick answers to common questions about concrete anchors.

What are concrete anchors?

Concrete anchors are typically rods with a threaded top portion and a base that expands in masonry materials to provide a strong holding force in concrete or other solid surfaces.

What are concrete anchors used for?

Concrete anchors are used for securing items like warehouse racking, signs, railings, or heavy equipment to concrete walls or floors, ensuring a firm and reliable hold.

How do I insert concrete anchors?

Drill a hole to the appropriate size in the concrete, insert the anchor, and use an expansion tool or drive a screw to expand the anchor, securing it firmly in the hole.

How do I use concrete anchors?

Drill a hole in the concrete, insert the anchor, and drive it in so it expands and grips the hole tightly, providing a strong fastening point.

How strong are concrete anchors?

Concrete anchors are very strong, but their holding strength depends on factors like vibration, load weight, concrete age, and anchor type. Always consult manufacturer specifications for load ratings.

Are concrete anchors removable?

Some concrete anchors, like concrete screws, are removable by unscrewing. Many expansion anchors, such as wedge anchors, are designed for permanent use and are difficult to remove.

How do I use plastic sleeve anchors?

Drill a hole, insert the plastic sleeve anchor, and drive a screw into the sleeve, which expands to grip the concrete securely as the screw is tightened.

Can wedge anchors be removed?

Wedge anchors are typically designed for permanent installations and are not easily removed without cutting or grinding them off.

Can I use concrete anchors in wood?

Concrete anchors are not designed for use in wood and should not be used in such applications, as they may not provide a secure hold and could damage the material.

How do I remove concrete anchors?

For removable anchors like concrete screws, simply unscrew them. For expansion anchors, you may need to cut them off with a grinder or saw, as they are often permanent.

What are the different types of concrete anchors?

Common types include wedge anchors, sleeve anchors, concrete screws, and drop-in anchors. Each type is suited for specific applications, such as heavy-duty or light-duty fastening, depending on load and material.

How do I choose the right concrete anchor for my project?

Consider the load weight, concrete type, environmental conditions, and whether the anchor needs to be removable. Consult load charts or contact our team for expert guidance.

Can concrete anchors be used in cracked concrete?

Some anchors, like certain wedge or screw anchors, are designed for cracked concrete, but you must check the manufacturer's specifications to ensure safety and performance. We also sell anchors specifically made for use in cracked concrete.