ThePipingMart Blog Fasteners Pin Type Anchor Bolt vs Screw Bolt – What’s the Difference

Pin Type Anchor Bolt vs Screw Bolt – What’s the Difference

Pin Type Anchor Bolt vs Screw Bolt

Have you ever tried to hang a shelf or mount a heavy object on the wall, only to discover that the screws or bolts don’t hold up? Well, you’re not alone. Choosing the right hardware is essential for any DIY project. Two popular anchoring options are pin type anchor bolts and screw bolts. In this blog post, we’ll explore the differences between these two types of bolts and which one is best for your needs.

What is Pin Type Anchor Bolt?

Pin type anchor bolts are advanced foundation bolts used in the construction industry. They are made from a strong steel alloy and feature a pin-shaped head for increased stability and a cylindrical shank to provide a better grip on the surface. The advantages of Pin Type anchor bolts compared to other concrete anchors include enhanced loading capacity, improved corrosion resistance, easy installation, and time savings compared to traditional methods.

What is Screw Bolt?

A screw bolt is a fastener consisting of a threaded shaft with a helical ridge, or threading, around it. It is used to hold two or more objects together by the compression of the parts being held together. Screw bolts are used in various applications where secure connections are desired and require additional strength beyond that provided by adhesives or other fastening methods. The threads on a screw bolt create strong clamp-like forces that make them reliable and ideal for many assemblies.

Difference Between Pin Type Anchor Bolt and Screw Bolt

Design and Application

One of the fundamental differences between a pin type anchor bolt and a screw bolt is their design. Pin type anchor bolts consist of a steel pin inserted into a sleeve. The sleeve expands when tightened, creating a strong anchor point. On the other hand, screw bolts have a screw head that is driven into the wall, and they don’t push out as much as a pin type bolt. Due to their design differences, these two bolts are better suited for different applications. Pin type anchor bolts are more suitable for heavy-duty applications, such as mounting air conditioning units and steel structures, while screw bolts are more appropriate for lighter loads or simple installations.

Material and Durability

The durability of the bolt depends on the materials used to make it. Pin type anchor bolts are typically made of high-grade or stainless steel, making them durable and strong. Meanwhile, Screw bolts consist of a metal screw and typically have lower-grade materials. As a result, pin type anchor bolts have a longer lifespan, making them suitable for applications in harsh environments or high-stress applications.

Precision and Installation

The installation process of pin type anchor bolts is more complex than screw bolts. You need to make a precise measurement and ensure that the hole size is right, as the pin will only expand to its maximum when installed correctly. Improper installation can cause damage to the pin and sleeve, resulting in a weak link. On the other hand, screw bolts are relatively easy to install, but there is a potential for over-tightening if you’re inexperienced. Over-tightening a screw bolt can result in stripping it.

Cost and Availability

Another significant difference is the cost and availability of the two types of bolts. Pin type anchor bolts are more expensive than screw bolts due to their high-grade steel material. They’re available only at speciality hardware stores or suppliers catering to high-protection installations. Screw bolts, however, are readily available at your nearest hardware store and generally cost less.

Load Capacity

Load capacity is among the most significant differences between pin type anchor bolts and screw bolts. Pin type anchor bolts can withstand more weight than screw bolts. For example, a single pin anchor bolt can hold up to 5000 lbs load, while a screw bolt can hold up to 150 lbs. It’s essential to understand the load capacity requirement of your application to choose the right bolt that will bear the load without fail.


In conclusion, choosing the right hardware for your DIY project is essential. Understanding the differences between pin type anchor bolts and screw bolts is crucial for making an informed decision. If you’re looking for a product that can support heavy loads, withstand harsh environments, and last a lifetime, a pin type anchor bolt is the right choice. However, if you’re undertaking a simple installation or looking for a more affordable option, screw bolts would suffice. Regardless of your choice between the two, make sure you follow the instructions for installation carefully.

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