Drop In Anchors

Welcome to the Drop-In Anchors category at MJ Anchor (Hebei DuoJia Metal Products Co., Ltd.), your premier manufacturer and global supplier based in Handan Yongnian, the heart of China’s fastener production industry. Building on our technical foundation as the Yonghong expansion screw factory, we produce high-performance drop-in anchors specifically engineered for heavy-duty female thread anchoring in solid concrete and stone. Our drop-in anchors are precision-manufactured to comply with international standards including GB, DIN, ANSI, and BS, ensuring seamless compatibility with various metric and fractional bolt systems. Fabricated from high-grade Carbon Steel and available in Stainless Steel (SS304/SS316), these fasteners are designed for flush-mount applications where a permanent internal thread is required for overhead hangers, handrails, or mechanical ducting. To guarantee exceptional durability and corrosion protection, our products undergo professional surface treatments such as White Zinc Plating and Yellow Zinc Plating. Each anchor features a precision-tapered internal expansion plug that ensures a secure, high-friction grip against the borehole wall when set with a manual or pneumatic setting tool. With our factory-direct production capabilities, we offer a full range of sizes and can accommodate custom manufacturing requirements based on your unique engineering specifications. MJ Anchor is committed to providing reliable, laboratory-tested fastening components that meet the safety and performance demands of modern global infrastructure. For wholesale pricing, technical data sheets, or bulk inquiries, please contact our expert team at Nancy@mj-anchor.com