{"id":659,"date":"2025-10-29T07:35:49","date_gmt":"2025-10-29T07:35:49","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/hex-head-flange-bolt\/"},"modified":"2025-10-31T07:57:26","modified_gmt":"2025-10-31T07:57:26","slug":"hex-head-flange-bolt","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/de\/product\/hex-head-flange-bolt\/","title":{"rendered":"hex head flange bolt"},"content":{"rendered":"<h4><strong>Product Details<\/strong><\/h4>\n<p>Our DIN 6921 Hex Flange Bolts are coated using the genuine <strong>Dacromet\u00ae<\/strong> process. This advanced surface treatment involves applying a water-based dispersion of zinc and aluminum flakes in a chromate binder. The parts are dip-spun or sprayed, then cured at high temperatures (~300\u00b0C \/ 575\u00b0F). This process creates a thin, multi-layered, and completely inorganic metallic silver-gray finish with several key advantages over traditional coatings:<\/p>\n<ul>\n<li><strong>Exceptional Corrosion Resistance:<\/strong> The overlapping zinc and aluminum flakes create a complex barrier that provides outstanding sacrificial protection, often exceeding 500-1000 hours in salt spray tests (ASTM B117), far surpassing standard zinc plating.<\/li>\n<li><strong>No Hydrogen Embrittlement:<\/strong> Because Dacromet is a non-electrolytic process, it does not generate hydrogen. This completely eliminates the risk of hydrogen embrittlement, a critical failure mode for high-strength fasteners (Grade 10.9 and above) that can occur with electroplating methods.<\/li>\n<li><strong>Thin, Uniform Coating:<\/strong> The coating is very thin (typically 5-10 \u00b5m) and uniform, ensuring that thread tolerances are maintained. This prevents the fitment issues that can arise with thicker coatings like hot-dip galvanizing, making them perfect for precision assemblies.<\/li>\n<\/ul>\n<p>These bolts feature an integrated flange that distributes the clamping load over a wider area, preventing damage to the mating surface and eliminating the need for a separate washer. They are available in both fully and partially threaded configurations to suit various clamping and shear-load requirements.<\/p>\n<h4><strong>Product Parameters<\/strong><\/h4>\n<p>The technical specifications for our Dacromet Coated DIN 6921 Hex Flange Bolts are detailed below.<\/p>\n<div class=\"MarkdownTable_tableContainer__2k5Kh\" tabindex=\"0\" role=\"region\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Product Name<\/strong><\/td>\n<td>Dacromet Coated Hexagon Flange Bolts DIN 6921<\/td>\n<\/tr>\n<tr>\n<td><strong>Standard<\/strong><\/td>\n<td>DIN 6921<\/td>\n<\/tr>\n<tr>\n<td><strong>Material<\/strong><\/td>\n<td>Carbon Steel<\/td>\n<\/tr>\n<tr>\n<td><strong>Property Class \/ Grade<\/strong><\/td>\n<td>8.8, 10.9, 12.9<\/td>\n<\/tr>\n<tr>\n<td><strong>Surface Treatment<\/strong><\/td>\n<td>Dacromet Coated<\/td>\n<\/tr>\n<tr>\n<td><strong>Thread Style<\/strong><\/td>\n<td>Fully Threaded or Partially Threaded<\/td>\n<\/tr>\n<tr>\n<td><strong>Diameter Range<\/strong><\/td>\n<td>M4 &#8211; M24<\/td>\n<\/tr>\n<tr>\n<td><strong>Measurement System<\/strong><\/td>\n<td>Metric<\/td>\n<\/tr>\n<tr>\n<td><strong>Brand Name<\/strong><\/td>\n<td>Duojia<\/td>\n<\/tr>\n<tr>\n<td><strong>Place of Origin<\/strong><\/td>\n<td>Hebei, China<\/td>\n<\/tr>\n<tr>\n<td><strong>Key Feature<\/strong><\/td>\n<td>High-Performance Corrosion Resistance, No Hydrogen Embrittlement<\/td>\n<\/tr>\n<tr>\n<td><strong>Application<\/strong><\/td>\n<td>Automotive, Wind Energy, Construction, Heavy Industry<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h4><strong>Product Features<\/strong><\/h4>\n<p>These high-performance bolts are engineered with a range of features for superior performance and reliability:<\/p>\n<ul>\n<li><strong>High-Performance Corrosion Protection:<\/strong> The multi-layered Dacromet coating provides a robust barrier against environmental corrosion, chemicals, and salt spray, ensuring long-term durability.<\/li>\n<li><strong>Eliminates Hydrogen Embrittlement Risk:<\/strong> The non-electrolytic application process makes these bolts the safest choice for high-tensile (Grade 10.9, 12.9) structural and safety-critical applications.<\/li>\n<li><strong>Thin, Uniform Coating for Precise Fit:<\/strong> Ensures that threads remain within tolerance for smooth, trouble-free assembly without the need for re-tapping nuts.<\/li>\n<li><strong>Excellent Heat and Abrasion Resistance:<\/strong> The cured metallic coating is resistant to high temperatures and mechanical abrasion, maintaining its protective integrity during installation and operation.<\/li>\n<li><strong>Integrated Flange for Simplified Assembly:<\/strong> The built-in flange distributes load effectively, resists vibrational loosening, and reduces part count and assembly time.<\/li>\n<li><strong>High-Strength for Demanding Loads:<\/strong> Manufactured from high-grade carbon steel, these bolts provide the exceptional clamping force and tensile strength required for the most demanding applications.<\/li>\n<\/ul>\n<h4><strong>Product Applications<\/strong><\/h4>\n<p>The unique combination of strength, corrosion resistance, and safety from embrittlement makes our Dacromet Coated Hex Flange Bolts ideal for a wide array of high-tech and heavy-duty industries:<\/p>\n<ul>\n<li><strong>Automotive Industry:<\/strong> Essential for brake systems, chassis assemblies, engine components, and suspension parts where high strength and corrosion resistance are critical.<\/li>\n<li><strong>Wind Energy:<\/strong> The preferred fastener for assembling wind turbine towers, nacelles, and blades, where long-term reliability in harsh weather is paramount.<\/li>\n<li><strong>Construction and Infrastructure:<\/strong> Used in high-tensile structural steel connections, bridges, and other projects requiring durable, high-strength bolting.<\/li>\n<li><strong>Marine Applications:<\/strong> An excellent alternative to stainless steel for components that require high tensile strength in corrosive marine environments.<\/li>\n<li><strong>Heavy Machinery &amp; Equipment:<\/strong> Provides secure and long-lasting connections for agricultural, mining, and industrial machinery exposed to wear and the elements.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Engineered for advanced corrosion protection without compromising material integrity, our Dacromet Coated DIN 6921 Hex Flange Bolts represent the pinnacle of high-performance fastening technology. These bolts are manufactured from high-strength carbon steel and treated with a state-of-the-art Dacromet coating, a non-electrolytic, water-based finish renowned for its exceptional resistance to corrosion, heat, and abrasion. The integrated flange head simplifies assembly and enhances vibration resistance, making these bolts a superior choice for critical applications in the automotive, wind energy, and heavy construction industries where reliability and freedom from hydrogen embrittlement are non-negotiable.<\/p>","protected":false},"featured_media":1273,"template":"","meta":[],"product_brand":[],"product_cat":[177],"product_tag":[102,132,179,180,181],"class_list":{"0":"post-659","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-manufacturer","9":"product_tag-hex-flange-bolt","10":"product_tag-2-inch-3-bolt-exhaust-flange","11":"product_tag-flange-bolt-sizes","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product\/659","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\/1273"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/media?parent=659"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_brand?post=659"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_cat?post=659"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_tag?post=659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}