Eye bolts are crucial hardware used in many projects, from construction to DIY tasks. Knowing the different sizes available is essential to ensure a proper fit and functionality. By choosing the right size, you avoid issues like insufficient strength or improper fit, making your projects more reliable and safe.
Eye Bolt Size Chart
| Length (B) | Outside Eye Diameter (C) | Inside Eye Diameter (D) | Overall Length* (E) | Thread Length* (F) |
|---|---|---|---|---|
| 1/4″-20 (A) | ||||
| 2″ | 1″ | 1/2″ | 3-7/32″ | 1-1/2″ |
| 3″ | 1″ | 1/2″ | 4-7/32″ | 1-1/2″ |
| 4″ | 1″ | 1/2″ | 5-7/32″ | 2″ |
| 5″ | 1″ | 1/2″ | 6-7/32″ | 2-1/2″ |
| 6″ | 1″ | 1/2″ | 7-7/32″ | 3″ |
| 5/16″-18 (A) | ||||
| 2-1/4″ | 1-1/4″ | 5/8″ | 3-23/32″ | 1-1/2″ |
| 3-1/4″ | 1-1/4″ | 5/8″ | 4-23/32″ | 1-1/2″ |
| 4-1/4″ | 1-1/4″ | 5/8″ | 5-23/32″ | 2-1/2″ |
| 5″ | 1-1/4″ | 5/8″ | 6-15/32″ | 2-1/2″ |
| 6″ | 1-1/4″ | 5/8″ | 7-15/32″ | 3″ |
| 3/8″-16 (A) | ||||
| 2-1/2″ | 1-1/2″ | 3/4″ | 4-1/4″ | 1-1/2″ |
| 3″ | 1-1/2″ | 3/4″ | 4-3/4″ | 1-1/2″ |
| 4″ | 1-1/2″ | 3/4″ | 5-3/4″ | 2″ |
| 4-1/4″ | 1-1/2″ | 3/4″ | 6″ | 2″ |
| 4-1/2″ | 1-1/2″ | 3/4″ | 6-1/4″ | 3″ |
| 5″ | 1-1/2″ | 3/4″ | 6-3/4″ | 3″ |
| 6″ | 1-1/2″ | 3/4″ | 7-3/4″ | 3″ |
| 8″ | 1-1/2″ | 3/4″ | 9-3/4″ | 4″ |
| 10″ | 1-1/2″ | 3/4″ | 11-3/4″ | 4″ |
| 1/2″-13 (A) | ||||
| 2″ | 2″ | 1″ | 4-3/16″ | 1-5/8″ |
| 3-1/4″ | 2″ | 1″ | 5-7/16″ | 2″ |
| 4″ | 2″ | 1″ | 6-3/16″ | 3″ |
| 4-1/2″ | 2″ | 1″ | 6-11/16″ | 3″ |
| 6″ | 2″ | 1″ | 8-3/16″ | 3″ |
| 8″ | 2″ | 1″ | 10-3/16″ | 4″ |
| 10″ | 2″ | 1″ | 12-3/16″ | 4″ |
| 12″ | 2″ | 1″ | 14-3/16″ | 4″ |
| 5/8″-11 (A) | ||||
| 4″ | 2-1/2″ | 1-3/8″ | 6-5/8″ | 3″ |
| 4-1/2″ | 2-1/2″ | 1-3/8″ | 7-1/8″ | 3″ |
| 6″ | 2-1/2″ | 1-3/8″ | 8-5/8″ | 3″ |
| 8″ | 2-1/2″ | 1-3/8″ | 10-5/8″ | 4″ |
| 10″ | 2-1/2″ | 1-3/8″ | 12-5/8″ | 4″ |
| 12″ | 2-1/2″ | 1-3/8″ | 14-5/8″ | 4″ |
| 15″ | 2-1/2″ | 1-3/8″ | 17-5/8″ | 6″ |
| 18″ | 2-1/2″ | 1-3/8″ | 20-5/8″ | 6″ |
| 24″ | 2-1/2″ | 1-3/8″ | 26-5/8″ | 6″ |
| 3/4″-10 (A) | ||||
| 4″ | 2-13/16″ | 1-1/2″ | 6-7/8″ | 3″ |
| 4-1/2″ | 2-13/16″ | 1-1/2″ | 7-3/8″ | 3″ |
| 6″ | 2-13/16″ | 1-1/2″ | 8-7/8″ | 3″ |
| 8″ | 2-13/16″ | 1-1/2″ | 10-7/8″ | 4″ |
| 10″ | 2-13/16″ | 1-1/2″ | 12-7/8″ | 4″ |
| 12″ | 2-13/16″ | 1-1/2″ | 14-7/8″ | 4″ |
| 15″ | 2-13/16″ | 1-1/2″ | 17-7/8″ | 6″ |
| 18″ | 2-13/16″ | 1-1/2″ | 20-7/8″ | 6″ |
| 24″ | 2-13/16″ | 1-1/2″ | 26-7/8″ | 6″ |
| 7/8″-9 (A) | ||||
| 5″ | 3-1/2″ | 1-3/4″ | 8-1/4″ | 3″ |
| 6″ | 3-1/2″ | 1-3/4″ | 9-1/4″ | 3″ |
| 8″ | 3-1/2″ | 1-3/4″ | 11-1/4″ | 4″ |
| 10″ | 3-1/2″ | 1-3/4″ | 13-1/4″ | 4″ |
| 12″ | 3-1/2″ | 1-3/4″ | 15-1/4″ | 4″ |
| 18″ | 3-1/2″ | 1-3/4″ | 21-1/4″ | 6″ |
| 24″ | 3-1/2″ | 1-3/4″ | 27-1/4″ | 6″ |
| 1″-8 (A) | ||||
| 6″ | 4″ | 2″ | 9-5/8″ | 3″ |
| 8″ | 4″ | 2″ | 11-5/8″ | 4″ |
| 10″ | 4″ | 2″ | 13-5/8″ | 4″ |
| 12″ | 4″ | 2″ | 15-5/8″ | 4″ |
| 15″ | 4″ | 2″ | 18-5/8″ | 6″ |
| 18″ | 4″ | 2″ | 21-5/8″ | 6″ |
| 24″ | 4″ | 2″ | 27-5/8″ | 6″ |
| 1-1/4″-7 (A) | ||||
| 6″ | 4-7/16″ | 2-3/16″ | 10-1/2″ | 3″ |
| 8″ | 4-7/16″ | 2-3/16″ | 12-1/2″ | 4″ |
| 12″ | 4-7/16″ | 2-3/16″ | 16-1/2″ | 4″ |
| 18″ | 4-7/16″ | 2-3/16″ | 22-1/2″ | 6″ |
| 24″ | 4-7/16″ | 2-3/16″ | 28-1/2″ | 6″ |
| 1-1/2″-6 (A) | ||||
| 6″ | 5-3/16″ | 2-1/2″ | 11-1/4″ | 3″ |
| 12″ | 5-3/16″ | 2-1/2″ | 17-1/4″ | 4″ |
| 18″ | 5-3/16″ | 2-1/2″ | 23-1/4″ | 6″ |
| 24″ | 5-3/16″ | 2-1/2″ | 29-1/4″ | 6″ |
| 2″-4-1/2 (A) | ||||
| 12″ | 6-7/8″ | 3-1/4″ | 19″ | 4″ |
What is an Eye Bolt?
An eye bolt is a type of fastener featuring a loop at one end, which is designed to attach hardware or secure items using a rope or chain. While eye bolts offer versatility and ease of use, choosing the correct size and material is crucial.
For instance, opting for a larger eye bolt might provide greater strength but could be bulkier, impacting the design and aesthetics of your project. On the other hand, a smaller eye bolt might not handle heavy loads as effectively. Thus, it’s important to balance these factors to ensure both functionality and safety in your applications.
Understanding Eye Bolt Sizes
Eye bolts come in various sizes, usually defined by the diameter of the shank and the size of the eye loop. As you select the right size, you must balance strength and space. Larger eye bolts can handle heavier loads but may be too bulky for some applications.
Conversely, smaller eye bolts might fit more discreetly but could lack the necessary strength for heavy-duty tasks. Therefore, it’s essential to consider how the size impacts both the performance and aesthetics of your project to ensure you make an informed decision.
How to Choose the Right Eye Bolt Size
Selecting the correct eye bolt size involves considering several factors, including load capacity, application environment, and compatibility with other hardware. Firstly, you need to balance the eye bolt’s strength with the load it must support.
A larger eye bolt may handle more weight but could be too cumbersome for tight spaces. Conversely, a smaller eye bolt might fit better but may not be strong enough for heavy loads. Additionally, the environment—whether indoor or outdoor—affects material choice due to exposure to elements.
Ensuring compatibility with other hardware is crucial to avoid issues in assembly. Thus, carefully evaluating these aspects helps in making a decision that ensures both functionality and safety.
FAQ
1. What materials are eye bolts typically made from?
Answer: Eye bolts are commonly made from materials such as steel, stainless steel, and zinc-plated steel. Steel eye bolts offer high strength and durability, making them suitable for heavy-duty applications. Stainless steel is ideal for environments exposed to moisture or corrosive substances, as it resists rust and corrosion. Zinc-plated steel provides a balance between cost and corrosion resistance, making it a good choice for general use.
2. How do I determine the right load capacity for an eye bolt?
Answer: To determine the right load capacity, consider the maximum weight the eye bolt will need to support and choose a size that can handle that load safely. Each eye bolt comes with a load rating, which indicates the maximum weight it can support. It’s important to account for dynamic loads and safety margins by selecting an eye bolt with a load rating higher than your actual needs. Always refer to the manufacturer’s specifications to ensure proper safety.
3. Can eye bolts be used in outdoor applications?
Answer: Yes, eye bolts can be used in outdoor applications, but it’s crucial to select the appropriate material for the environment. Stainless steel eye bolts are recommended for outdoor use because they are resistant to rust and corrosion. For less demanding conditions, zinc-plated or galvanized eye bolts may suffice. Always consider the environmental factors, such as exposure to moisture, chemicals, or extreme temperatures, to ensure long-lasting performance.