What is Thread Rolling?

Thread Rolling is the process of forming threads on a metal stock by displacing the metal surface. The Thread Rolling process involves pressing a hardened tool, called a die, onto the surface of a workpiece to create the threads. It does not remove any excess metal from the piece like chips or shavings but simply uses more hardened steel to mold threads on a more ductile metal piece. This method does not severe the integrity of the metal form but simply elongates and reforms it to make it even stronger. Thread Rolling is typically used to produce threads on rods or bars, and it is capable of producing threads with high accuracy and surface finish.

It is a known fact that cold working helps strengthen most materials including metals alongside their fatigue resistance and hardness. Thread rolling is such a method that grants a ton of benefits for the manufacturers using this method. Apart from putting out a way stronger product, it also does the job with minimum wastage and the best-looking surface finish. In hindsight, Thread Rolling is a process of forming threads rather than cutting or carving them out like in older traditional methods and is way more accurate and economic.