Lock Washer

Welcome to the Lock Washers category at MJ Anchor (Hebei DuoJia Metal Products Co., Ltd.), your premier manufacturer and global supplier located in Handan Yongnian, the largest fastener production hub in China. Drawing on the deep technical expertise of our predecessor, the Yonghong expansion screw factory, we produce a comprehensive range of lock washers—including DIN 127 Spring Lock Washers, DIN 6798 Serrated Tooth Washers (Internal and External), and Nord-Lock style wedge-locking washers—specifically engineered to prevent fastener loosening caused by extreme vibration, thermal cycling, and mechanical shock. Our lock washers are precision-manufactured to comply with rigorous international standards, including GB, DIN, ANSI, and BS, ensuring maximum security for critical joints in automotive, structural steel, and heavy machinery applications. Fabricated from high-grade Spring Steel (65Mn), Carbon Steel, or Stainless Steel (SS304/SS316), these essential components are heat-treated to achieve optimal hardness and spring tension, providing a reliable mechanical grip against the nut and substrate. To guarantee long-term durability and protection against environmental corrosion, our products feature professional surface treatments such as Black Oxide (Phosphate), Yellow Zinc Plating, White Zinc Plating, and Dacromet. With our advanced factory-direct production lines, we support custom manufacturing for non-standard thicknesses, specialized tooth configurations, and unique material specifications based on your specific engineering blueprints. MJ Anchor is committed to providing reliable, laboratory-tested fastening components that meet the safety and precision demands of modern global infrastructure. For bulk wholesale pricing, material test reports (MTC), or technical consultations, please contact our expert team at Nancy@mj-anchor.com