Skip to content 
Choosing the right anchor bolt is essential for the success of any construction project. Here are 8 of the most commonly used anchor bolts, along with their specific characteristics, materials, advantages, and applications. Let’s break down each type so you can make an informed decision.
1. Cast-in-Place Anchor Bolts
Cast-in-place anchors are straight bolts inserted into concrete foundations. They often include a nut and a small steel plate on the embedded end to increase holding strength. The other end is usually corkscrewed to connect concrete or steel structures to the foundation.
They are made from carbon steel or stainless steel and provide the strongest hold by being cast directly into concrete. One variant is the headed anchor bolt, which has a hexagonal or square head for added support.
These bolts are ideal for anchoring heavy machinery to concrete floors or securing buildings to foundations, offering the highest stability and strength.
2. Wedge Anchors Bolts
Wedge anchors bolt consist of a slotted sleeve and a tapered wedge. Tightening the bolt drives the wedge deeper, expanding the sleeve for a secure fit.
They are typically made from carbon steel or stainless steel. They provide a very strong hold, especially in cracked concrete, and are easy to install.
Used for anchoring heavy equipment in concrete, they are perfect for industrial and commercial use where high load-bearing is required.
3. Sleeve Anchors Bolts
Similar to wedge anchors, sleeve anchors have an inner sleeve that expands when tightened. This design allows them to grip securely in concrete or masonry.
Made from carbon steel or stainless steel, they offer a robust hold and are suitable for moderate to heavy loads.
They are great for anchoring equipment in brick or concrete and are commonly used in construction projects involving masonry materials.
4. Expansion Anchors Bolts
Expansion anchors rely on friction created by expansion when installed in a predrilled hole. They expand as you install them, creating a tight grip within the hole.
These are made from carbon steel or stainless steel. They are easy to install and provide a reliable hold in concrete and masonry.
Ideal for general construction, they can secure equipment and handle moderate to heavy loads effectively, offering versatility in various applications.
5. Chemical (Adhesive) Anchors Bolts
Chemical anchors bolt use a resin adhesive injected into the predrilled hole to bond the anchor bolt. The resin hardens, creating a solid bond between the bolt and the concrete.
Typically, they use threaded rods made from stainless steel or galvanized steel. This method provides a very strong, permanent hold, suitable for high-load applications.
These anchors are used for securing equipment in concrete, even in cracked areas, ensuring maximum strength and durability.
6. Concrete Screws
Concrete screws bolt resemble traditional screws but have coarser threads and are self-tapping. They are installed directly into a predrilled hole without the need for additional anchors.
Made from hardened steel with a corrosion-resistant coating, they offer a removable anchor point and are easy to install.
These screws are ideal for light to moderate loads in concrete and masonry, making them great for quick, temporary installations or when adjustments are needed.
7. Bent-Bar Anchor Bolts (J and L-Type)
Bent-bar anchor bolts are bent at one end to provide better support when set into wet concrete. They come in J and L shapes, designed to enhance their grip within the foundation.
Made from carbon steel or stainless steel, they offer a strong hold for heavy structural elements, ensuring they stay securely embedded.
These bolts are used to anchor heavy equipment, columns, and other structural components to concrete foundations, offering enhanced stability for large-scale projects.
8. Eye Foundation Bolts
Eye foundation bolts bend into an eye shape at one end, with a cross piece at the other for setting into a concrete foundation. This design is perfect for attaching cables and steel rods.
Made from carbon steel or stainless steel, they allow secured components to move if necessary while providing a firm hold to withstand strong movements and pressure.
These bolts are ideal for applications where cables and rods need to be securely anchored, such as in tensioning systems and structures that require some flexibility.
Conclusion
Selecting the right anchor bolt depends on your project’s specific needs. Whether you need maximum strength with cast-in-place bolts or a flexible solution with eye bolts, understanding each type will help ensure the success and safety of your construction.
If you have any questions or need further guidance, feel free to reach out to us at Hengrui. We’re here to help you find the perfect fit for your project.
