Thread Rolling

A cold working process in which a thread form is impres­sed on the work piece by rolling it between hardened steel dies. The grain of the material is not cut as in thread cutting, but regrouped by plastic deformation into the shape of the thread profile. Advantages associated with thread rolling include cons­tant sizing, burnishing, surface hardening, wear and corrosion resistance, greater tensile strength, greater resistance to bending and significantly improved fatigue life.