Square Nuts

Welcome to the Square Nuts category at MJ Anchor (Hebei DuoJia Metal Products Co., Ltd.), your premier manufacturer and global supplier located in Handan Yongnian, the heart of China’s fastener production industry. Drawing on the technical expertise of our predecessor, the Yonghong expansion screw factory, we produce a comprehensive range of square nuts—including DIN 557 (Standard) and DIN 562 (Thin) varieties—specifically engineered for superior surface contact and anti-rotation stability in machinery, electronics, and structural channel systems. Our square nuts are precision-manufactured to comply with rigorous international standards, including GB, DIN, ANSI, and BS, ensuring seamless compatibility with square-head bolts and threaded rods in global industrial applications. Fabricated from high-grade Carbon Steel or Stainless Steel (SS304/SS316), these fasteners are available in various strength grades to handle specific load-bearing and vibration-resistant requirements. Their four-sided design provides a greater bearing surface compared to standard hex nuts, making them the preferred choice for blind-hole assemblies and heavy-duty electrical grounding. To guarantee long-term durability and protection against environmental corrosion, our products feature professional surface treatments such as White Zinc Plating, Yellow Zinc Plating, and Hot-Dip Galvanization (HDG). With our advanced factory-direct production lines, we support custom manufacturing for non-standard dimensions, specialized thread pitches, and unique material specifications based on your specific technical drawings. 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