The working principle is self-locked by using the friction between the nut and the bolt. But the reliability of this self-locking is reduced in the dynamic load. In some important occasions, we will take some anti-loosening measures to ensure the reliability of the nut locking. Lock nut is one of the loose measures.We taking advantage of experience workmanship, scientific administration and advanced equipment, ensure the product quality of production, we not only win the customers' faith, but also build up our brand. Today, our team is committed to innovation, and enlightenment and fusion with constant practice and outstanding wisdom and philosophy, we cater to the market demand for high-end products, to do professional products. With its rich manufacturing experience, high-quality products, and perfect after-sale service, the company has gained good reputation and has become one of the famous enterprise specialized in manufacturing series.We sincerely hope to establish business relation with you and pursue mutual benefit. We put the product quality and customer's benefits to the first place. Our experienced salesmen supply prompt and efficient service. Quality control group make sure the best quality. We believe quality comes from detail. If you have demand, let us work together to get success. After years' creating and developing, with the advantages of trained qualified talents and rich marketing experience, outstanding achievements were gradually made. We get good reputation from the customers due to our good products quality and fine after-sale service. We sincerely wish to create a more prosperous and flourishing future together with all the friends home and abroad! To win customers' confidence, Tiancong have set up a strong sales and after-sales team to provide the best product and service. Tiancong abides by the idea of "Grow with customer" and philosophy of "Customer-oriented" to achieve cooperation of mutual trust and benefit. Best Source will always stand ready to cooperate with you. Let's grow together!