When it comes to anchoring items to rafters, the two most common options are eye lag screws and eye bolts. While both serve the same purpose, there are some key differences between the two that you should be aware of before making your choice.

Eye lag screws, also known as lag eye screws or screw eyes, are small screws with an eye at the end of them. They are typically used for light-duty applications, such as hanging picture frames or light fixtures. Because of their small size, they are relatively easy to install and don't require a lot of torque to get them securely anchored.

Eye bolts, on the other hand, are larger and more heavy-duty. They are designed to handle more weight and can be used for a wider range of applications, such as securing a heavy chandelier or a storage rack to a rafter. Eye bolts come in a variety of sizes and shapes, including straight, bent, and shoulder versions.

So which one should you choose? The answer depends on the weight of the item you're anchoring and the amount of force it will be subjected to. For light-duty applications, such as hanging a plant or a small light fixture, eye lag screws will work just fine. However, for heavier items, or those that will be subjected to a lot of force (such as a swing or a heavy storage shelf), you'll want to use eye bolts.

One important factor to consider when using eye bolts is the length of the bolt itself. For longer spans, you'll want to use long lag eye bolts, which are specifically designed for use in rafters. These bolts are typically at least 6 inches long, and sometimes up to 12 inches or more. The longer length allows them to penetrate deeply into the rafter, providing a more secure anchor point.

Another important consideration is the material the eye bolt or eye lag screw is made from. Stainless steel is a popular choice, as it is rust-resistant and can withstand exposure to the elements. Galvanized steel is also a good choice, as it is coated with zinc to prevent rust and corrosion.

In summary, when it comes to anchoring items to rafters, eye lag screws are a good choice for light-duty applications, while eye bolts are better suited for heavier items or those that will be subjected to a lot of force. If you're using eye bolts, be sure to choose long lag eye bolts for longer spans, and consider the material the bolt is made from to ensure it will last over time. With these tips in mind, you'll be able to securely anchor items to your rafters with confidence.