A hoisting eye, also known as a lifting eye or an eye bolt, is a threaded fastener with a circular or oval loop that is used to attach a removable lifting hook or rigging hardware. There are many different synonyms for the word "hoisting eye" such as eye nut, lifting lug, eye bolt anchor, eyebolt ring, and eye screw. Each of these terms refers to a slightly different variation of the basic hoisting eye, but they are all designed to serve the same fundamental purpose of lifting and moving heavy objects safely and efficiently. Whatever the specific terminology used, these hoisting eyes represent an essential tool in many different industries including construction, transportation, and manufacturing.