When cutting threads, what should hexagonal dies not be used for?

Hexagonal dies are not intended for cutting new threads because they are specifically designed for rethreading or repairing existing threads. When you use a hexagonal die, it typically aligns and centers on the existing thread profile, allowing it to restore or improve the quality of worn or damaged threads. Cutting new threads requires a different tool, such as tapered or straight thread cutting tools, which are designed to create a thread profile from a smooth surface.

Using hexagonal dies for new threads could lead to inconsistent depth and quality of the threads, as they may not create the sharp features needed for effective threading. It is crucial to choose the right tool for the right application in pipe fitting to ensure that connections are secure and fit properly. Other options, such as measuring thread size or creating pipe fittings, involve different tools and techniques, emphasizing the importance of selecting the appropriate method depending on the task at hand.