Fastening screw

flat-headspannersteel

Rolling is a process that operates through the cold plastic deformation of the material and let the obtaining of precision threads and profiles. Advantages of this type of working: high quality in material More resistance due to the fact that the material, through rolling, doesn’t suffer the incision of its fibres but modifies the crystal structure, creating an excellent security against breakages. resistance More resistance to wear, because rolling with the deformation causes the smoothing of the surface with a reduction of wear and noise, which besides permits a smaller working stress. precision Great repeatability due to the fact that using rough material with the right requested tolerances, it is possible to obtain very precise threads. ROLLERS IN STORE Zielo company has a constantly up-to-date equipment and avails itself of high specialized operators. We have a great variety of rollers; in case you’re interested in something different, that is not present in our lists, don’t hesitate to contact us, because in 4 weeks, we’re able to get the necessary equipments. Metric threads Concerning metric threads, we have a lot of rollers with pitches from 0,7 to 6, which enable us to produce screws with several diameters. Tie rods rolling We produce tie rods by order of our customers with several threads, pitches and materials.