What method is typically used for producing machine screws?

The method used for producing machine screws is typically thread rolling. This process involves the cold-forming of metal into a desired shape, with threads formed by passing a cylindrical blank through a pair of thread-rolling dies.

Thread rolling is advantageous for producing screws and similar fasteners because it results in a stronger product due to the work hardening of the material and produces a superior finish without significantly removing material, which is crucial for creating the precise threads needed for machine screws.

Other methods like laser cutting, electroforming, and 3D printing are suitable for different applications and products but do not typically achieve the efficiency, strength, and precision of thread rolling when it comes to manufacturing screws. Laser cutting, for instance, is more suited for creating complex shapes from flat sheets, while electroforming is used for making detailed and delicate parts, and 3D printing is generally employed for prototyping or producing low-volume, complex geometries rather than high-strength threaded fasteners.