Everything About Thread Cutting Tools

Thread-cutting tools are indispensable in various machining and metalworking processes, contributing to the creation of threaded connections in different materials. In this article, we'll delve into what thread-cutting tools are, explore the different types available, and understand how each type works and its specific purpose.

What are Thread Cutting Tools?

Thread-cutting tools are precision tools designed for the creation of threads on workpieces. They play a crucial role in manufacturing processes where threaded connections are required, such as in the production of screws, bolts, and other threaded components.

Different Types of Thread-Cutting Tools

There are several types of thread-cutting tools, each tailored for specific applications:

  • Tap Tools: Taps are used for internal threading. They come in various designs, including hand taps, machine taps, and spiral-point taps.
  • Dies: The Dies are external thread-cutting tools. They can be split dies or solid dies, and they are utilized for cutting threads on rods and external surfaces.
  • Thread Milling Cutters: These cutters use a milling process to create threads. They are suitable for CNC machines and offer versatility in thread types and sizes.
  • Thread Chasers: Chasers are used in thread-chasing operations. They are often employed in lathes to produce accurate and repetitive threads.
  • Thread Forming Taps: Instead of cutting, these taps deform the material to create threads. They are known for their ability to produce strong threads in certain materials.

How Each Type Works

The working principle of thread-cutting tools varies based on their type:

  • Taps: Taps cut threads by removing material as they rotate into the pre-drilled hole.
  • Dies: The Dies cut threads on external surfaces by pressing onto the workpiece.
  • Thread Milling Cutters: These cutters remove material as they move along the workpiece, creating threads through a milling action.
  • Thread Chasers: Chasers engage with the workpiece as it rotates, cutting threads in a chasing motion.
  • Thread Forming Taps: These taps reshape the material without removing it, forming threads through plastic deformation.

Purpose and Applications

Thread-cutting tools serve a variety of purposes, from creating standardized screws to producing custom threads for specific applications. Their applications span industries like automotive, aerospace, construction, and manufacturing.


Thread-cutting tools are essential components in the realm of machining, enabling the creation of precise and reliable threaded connections. The choice of the right tool depends on the specific requirements of the threading operation.