If you’ve ever heard a mechanic talk about “chasing threads,” they’re referring to a simple but important step in making sure bolts and fasteners tighten correctly. In this Auto Terms Explained video, we break down what chasing threads means, why it’s different from cutting new threads, and how it helps clean and restore the threads in a bolt hole or on a fastener. Understanding thread chasing can prevent cross-threading, ensure proper torque, and make your repairs go smoother — especially on ol