{"id":657,"date":"2025-10-29T07:35:49","date_gmt":"2025-10-29T07:35:49","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/hot-dip-galvanized-hex-flange-bolts\/"},"modified":"2025-10-31T07:50:43","modified_gmt":"2025-10-31T07:50:43","slug":"hot-dip-galvanized-hex-flange-bolts","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/de\/product\/hot-dip-galvanized-hex-flange-bolts\/","title":{"rendered":"Hot dip galvanized hex flange bolts"},"content":{"rendered":"

Product Details<\/strong><\/h4>\n

Our DIN 6921 Hex Flange Bolts are distinguished by their robust Hot Dip Galvanized (HDG) coating. This is not a simple plating; it is a metallurgical process where the entire carbon steel bolt is immersed in a bath of molten zinc. This creates a thick, multi-layered coating of zinc-iron alloy and pure zinc that is metallurgically bonded to the steel substrate. The resulting finish is exceptionally durable, abrasion-resistant, and provides superior cathodic (sacrificial) protection, meaning it will corrode preferentially to protect the underlying steel, even if scratched.<\/p>\n

These bolts are typically fully threaded<\/strong>, offering maximum engagement and adjustability for a wide range of clamping thicknesses. Due to the substantial thickness of the HDG coating, the threads are manufactured to specific tolerances. It is essential to use them with corresponding hot-dip galvanized nuts that have been tapped oversize to ensure a proper, non-binding fit. The integrated flange eliminates the need for a separate washer, simplifying assembly and providing a broad bearing surface to prevent pull-through and distribute clamping pressure effectively.<\/p>\n

Product Parameters<\/strong><\/h4>\n

The technical specifications for our Hot Dip Galvanized DIN 6921 Hex Flange Bolts are provided below for your procurement and engineering needs.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/strong><\/td>\nHot Dip Galvanized Hexagon Flange Bolts DIN 6921<\/td>\n<\/tr>\n
Standard<\/strong><\/td>\nDIN 6921<\/td>\n<\/tr>\n
Material<\/strong><\/td>\nCarbon Steel<\/td>\n<\/tr>\n
Property Class \/ Grade<\/strong><\/td>\n4.8, 8.8, 10.9, 12.9<\/td>\n<\/tr>\n
Surface Treatment<\/strong><\/td>\nHot Dip Galvanized (HDG)<\/td>\n<\/tr>\n
Thread Style<\/strong><\/td>\nFully Threaded (Partially Threaded available upon request)<\/td>\n<\/tr>\n
Diameter Range<\/strong><\/td>\nM4 – M24<\/td>\n<\/tr>\n
Measurement System<\/strong><\/td>\nMetric<\/td>\n<\/tr>\n
Brand Name<\/strong><\/td>\nDuojia<\/td>\n<\/tr>\n
Place of Origin<\/strong><\/td>\nHebei, China<\/td>\n<\/tr>\n
Key Feature<\/strong><\/td>\nMaximum Corrosion Resistance for Outdoor Use<\/td>\n<\/tr>\n
Application<\/strong><\/td>\nConstruction, Infrastructure, Agriculture, Heavy Industry<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Product Features<\/strong><\/h4>\n

These bolts are engineered with features specifically designed for long-term performance in harsh conditions:<\/p>\n

    \n
  • Superior Corrosion Protection:<\/strong> The thick, metallurgically bonded Hot Dip Galvanized coating provides decades of maintenance-free protection against rust and corrosion, even in coastal, industrial, and agricultural settings.<\/li>\n
  • Heavy-Duty Strength:<\/strong> Manufactured from high-strength carbon steel (Grades 8.8, 10.9, 12.9), these bolts provide the robust tensile and clamping strength needed for load-bearing structural connections.<\/li>\n
  • Integrated Flange Design:<\/strong> The built-in flange distributes clamping force over a wide area, prevents damage to the joint surface, and offers excellent resistance to loosening caused by vibration.<\/li>\n
  • Abrasion Resistant Coating:<\/strong> Unlike thinner platings, the HDG coating is highly resistant to damage during transport, handling, and installation, ensuring the protective barrier remains intact.<\/li>\n
  • Versatile Fully Threaded Body:<\/strong> The full-length threading allows for maximum clamping flexibility, making these bolts suitable for a wide variety of connection depths and material thicknesses.<\/li>\n
  • DIN 6921 Compliance:<\/strong> Manufactured to precise international standards, guaranteeing dimensional accuracy, consistent quality, and reliable performance.<\/li>\n<\/ul>\n

    Product Applications<\/strong><\/h4>\n

    The exceptional durability and corrosion resistance of our Hot Dip Galvanized Hex Flange Bolts make them the standard choice for demanding outdoor and structural applications:<\/p>\n

      \n
    • Structural Steel & Construction:<\/strong> Essential for assembling steel-frame buildings, bridges, stadiums, and other large-scale construction projects.<\/li>\n
    • Utilities & Infrastructure:<\/strong> Widely used in the erection of electrical transmission towers, communication masts, highway guardrails, and solar panel racking systems.<\/li>\n
    • Agriculture & Farming:<\/strong> Ideal for assembling heavy farm machinery, silos, grain bins, and irrigation systems that are constantly exposed to weather and corrosive materials.<\/li>\n
    • Transportation:<\/strong> Provides secure, long-lasting connections for truck frames, trailer hitches, and other heavy vehicle components exposed to road salt and moisture.<\/li>\n
    • Coastal and Industrial Plants:<\/strong> Perfect for use in environments with high humidity, salt spray, or industrial pollutants, such as docks, port facilities, and chemical processing plants.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Built for maximum durability in the most severe outdoor and industrial environments, our Hot Dip Galvanized (HDG) DIN 6921 Hex Flange Bolts offer unparalleled corrosion protection. These heavy-duty fasteners are manufactured from high-strength carbon steel and are subjected to a hot-dip galvanizing process, creating a thick, resilient coating of zinc that provides decades of reliable performance. Featuring an integrated flange to distribute load and resist vibration, and a fully threaded body for versatile clamping, these bolts are the ultimate solution for construction, infrastructure, and agricultural applications where exposure to the elements is a constant challenge. Compliant with the DIN 6921 standard, they deliver the strength and longevity required for critical structural connections.<\/p>","protected":false},"featured_media":1267,"template":"","meta":[],"product_brand":[],"product_cat":[177],"product_tag":[102,122,175,179,180,181],"class_list":{"0":"post-657","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-flange-bolt","7":"product_tag-stainless-steel-anchor-bolts","8":"product_tag-anchor-bolts-supplier","9":"product_tag-hex-tap-bolt","10":"product_tag-hex-flange-bolt","11":"product_tag-2-inch-3-bolt-exhaust-flange","12":"product_tag-flange-bolt-sizes","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product\/657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/media\/1267"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/media?parent=657"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_brand?post=657"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_cat?post=657"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_tag?post=657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}