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Thread rolling is a mechanical process where threads are cold formed when the part is squeezed between two thread dies on a thread rolling machine. Thread rolling provides for a stronger thread and no loss of material.

Thread rolling is a cold working process where a machined blank is compressed between rotating or reciprocating dies, whose thread profile is ground into the dies. As the blank cylinder is penetrated by the dies, the metal flows into the die cavities and forms the thread profile into the part.

Threads produced using a thread rolling machine are 30% stronger than untreated cut threads of the same size, however heat treatment and post-processing of cut threads will reduce this difference. Thread rolling machines use a smaller diameter blank than a screw-cutting machine.

Thread rolling makes use of hardened steel cylindrical dies to shape materials; the dies, imprinted with the thread profile, penetrate the work metal at ultra-high pressures in order to displace and mold it into a mirror-image thread.

For the same reason, rolled threads are often much smoother, and damage resistant during handling than cut threads. Thread rolling changes the mechanical properties of the material by work hardening it, resulting in increased wear and fatigue resistance, as well as enhanced shear, tensile, and yield......

For the same reason, rolled threads are often much smoother, and damage resistant during handling than cut threads. Thread rolling changes the mechanical properties of the material by work hardening it, resulting in increased wear and fatigue resistance, as well as enhanced shear, tensile, and yield......