Which type of bolt is specifically designed to be used as a lifting device?

The type of bolt specifically designed to be used as a lifting device is the eye bolt. Eye bolts feature a looped head that allows for a secure attachment point for a hook or sling, making them ideal for lifting applications. Their design ensures that loads can be safely lifted and moved, as the eye allows for even distribution of the weight and provides stability during the lifting process.

Other bolt types serve different functions and may not have the same lifting capabilities. For instance, J bolts are primarily used for anchoring structures, anchor bolts are installed to secure items to concrete or masonry, and hex bolts are commonly used in fastening applications but do not provide the functionality required for lifting. Therefore, eye bolts are uniquely suited to lifting tasks due to their specific design and intended use.