How To Remove Dynabolts


Dynabolts, also known as anchor bolts, are widely used in construction and renovation projects to secure materials and fixtures to concrete or masonry surfaces. However, there may come a time when you need to remove these dynabolts due to a change in design, replacing old fixtures, or simply fixing a mistake. The process of removing dynabolts may seem daunting at first, but with the right tools and techniques, you can safely and effectively remove them without causing any damage to the surface. In this article, we will guide you through the step-by-step process of how to remove dynabolts hassle-free.

Supplies Needed

Before we dive into the process, let’s gather the necessary supplies to remove dynabolts:
1. Safety goggles and gloves to protect yourself during the process.
2. A hammer to strike the dynabolt.
3. A pry bar or flathead screwdriver to help loosen the bolt.
4. A power drill with a carbide or masonry bit.
5. A socket wrench or adjustable wrench.
6. Lubricant or penetrating oil (optional) to loosen stubborn dynabolts.
7. A vacuum or broom to clean up any debris.

Step-by-Step Guide

Now that we have our supplies ready, let’s go through the step-by-step process of removing dynabolts:

Step 1: Safety First

Always prioritize safety when working with tools and equipment. Make sure to wear safety goggles and gloves to protect your eyes and hands from any potential injuries during the process.

Step 2: Assess the Situation

Before attempting to remove the dynabolts, assess the situation to determine the type of dynabolt used and the condition it’s in. Some dynabolts have exposed heads, making them easier to remove, while others may be embedded deep in the surface, requiring additional steps.

Step 3: Loosen the Nut

If the dynabolt has an exposed nut, use a socket wrench or adjustable wrench to turn the nut counterclockwise and loosen it. This will make it easier to remove the bolt later on.

Step 4: Strike the Bolt

With the nut loosened, take a hammer and strike the exposed end of the dynabolt forcefully. This will help break any friction or corrosion that might be holding the bolt in place. Repeat the process several times, striking the bolt from different angles to ensure it loosens.

Step 5: Extract the Dynabolt

Once the bolt is loosened, use a pry bar or flathead screwdriver to pry it out of the hole. Apply gentle pressure while pulling the bolt towards you. If the bolt seems stubborn, you can try spraying some lubricant or penetrating oil around it. Allow the oil to penetrate for a few minutes before attempting to remove the bolt again.

Step 6: Removing Embedded Dynabolts

For dynabolts embedded deep in the concrete or masonry surfaces, a different approach is required. Start by drilling a hole into the center of the dynabolt using a power drill with a carbide or masonry bit. The hole should be slightly smaller than the diameter of the bolt.

Step 7: Loosening the Dynabolt

After drilling the hole, insert a flathead screwdriver or pry bar into the hole and apply pressure to loosen the dynabolt. Use the hammer to deliver a few gentle taps to the screwdriver or pry bar, which will help loosen the bolt.

Step 8: Removing the Dynabolt

With the dynabolt loosened, use the pry bar or flathead screwdriver to pry it out of the hole, similar to the process for exposed bolts. Apply steady pressure and wiggle the bolt if necessary until it is completely removed.

Cleaning and Finishing

After successfully removing the dynabolts from the surface, it’s essential to clean up any debris or dust left behind. Use a vacuum or broom to remove loose particles, ensuring a clean and safe working environment. If the removed dynabolts have left behind any holes or damage, consult a professional to provide proper solutions for repair or filling the holes.


Removing dynabolts doesn’t have to be a complex and intimidating task. With the right tools, safety precautions, and step-by-step approach, you can safely and efficiently remove dynabolts from concrete or masonry surfaces. Remember to assess the condition of the dynabolts, loosen the nut, strike the bolt to break the friction, and use appropriate tools to extract the bolt. For embedded dynabolts, drilling a hole, loosening the bolt, and prying it out will do the trick. By following these simple guidelines, you’ll be able to remove dynabolts hassle-free and proceed with your construction or renovation project with confidence.

Leave a Comment