{"id":640,"date":"2025-10-29T07:35:46","date_gmt":"2025-10-29T07:35:46","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/corrosion-resistant-hex-bolts\/"},"modified":"2025-10-31T03:04:36","modified_gmt":"2025-10-31T03:04:36","slug":"corrosion-resistant-hex-bolts","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/fr\/product\/corrosion-resistant-hex-bolts\/","title":{"rendered":"Boulons hexagonaux r\u00e9sistants \u00e0 la corrosion"},"content":{"rendered":"<h4><strong>Clarifications cruciales sur les sp\u00e9cifications des produits<\/strong><\/h4>\n<p>The product page contains some conflicting or generic information. The following points provide a precise and accurate description of this product:<\/p>\n<ul>\n<li><strong>Finish vs. Surface Treatment:<\/strong> The page lists &#8220;Hot-Dip Galvanized&#8221; as the surface treatment and &#8220;Zinc Plated&#8221; as the finish. The correct and more specific term is <strong>Galvanis\u00e9 \u00e0 chaud (HDG)<\/strong>. This process is fundamentally different from standard &#8220;zinc plating&#8221; (electroplating), as it creates a much thicker and more robust protective layer, making it suitable for harsh conditions.<\/li>\n<li><strong>Material Inconsistency:<\/strong> The material is listed as &#8220;Stainless Steel\/Carbon Steel.&#8221; Hot-dip galvanizing is a process specifically for <strong>Acier au carbone<\/strong>. Stainless steel is inherently corrosion-resistant and is not galvanized. Therefore, this product is made from Carbon Steel.<\/li>\n<li><strong>Incoh\u00e9rence des notes :<\/strong> The grade list includes both carbon steel classes (4.8, 8.8, 10.9, 12.9) and stainless steel grades (A2-70, etc.). Only the <strong>carbon steel grades are applicable<\/strong>. It is important to note that while high-strength grades like 10.9 can be galvanized, special procedures are required to prevent hydrogen embrittlement. Grade 8.8 is the most common high-strength grade for HDG bolts.<\/li>\n<li><strong>Nut and Washer Compatibility:<\/strong> A critical detail for HDG bolts is that they require <strong>specialized HDG nuts<\/strong>. Due to the thick zinc coating on the bolt&#8217;s threads, the matching nuts must be tapped <em>oversize<\/em> after galvanizing to ensure a proper fit. Standard nuts will not fit on an HDG bolt.<\/li>\n<\/ul>\n<h4><strong>Param\u00e8tres des produits (corrig\u00e9s et clarifi\u00e9s)<\/strong><\/h4>\n<div class=\"MarkdownTable_tableContainer__2k5Kh\" tabindex=\"0\" role=\"region\">\n<table>\n<thead>\n<tr>\n<th>Param\u00e8tre Poste<\/th>\n<th>Description des sp\u00e9cifications<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Nom du produit<\/strong><\/td>\n<td>Full-Threaded Hex Bolt<\/td>\n<\/tr>\n<tr>\n<td><strong>Standard<\/strong><\/td>\n<td>DIN 933<\/td>\n<\/tr>\n<tr>\n<td><strong>Nom de la marque<\/strong><\/td>\n<td>Duojia<\/td>\n<\/tr>\n<tr>\n<td><strong>Lieu d'origine<\/strong><\/td>\n<td>Hebei, Chine<\/td>\n<\/tr>\n<tr>\n<td><strong>Mat\u00e9riau<\/strong><\/td>\n<td>Acier au carbone<\/td>\n<\/tr>\n<tr>\n<td><strong>Grade (Strength)<\/strong><\/td>\n<td>4.8, 8.8 (Common), 10.9 (Available)<\/td>\n<\/tr>\n<tr>\n<td><strong>Traitement de surface<\/strong><\/td>\n<td><strong>Galvanis\u00e9 \u00e0 chaud (HDG)<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Gamme de tailles<\/strong><\/td>\n<td>M6 to M24<\/td>\n<\/tr>\n<tr>\n<td><strong>Syst\u00e8me de mesure<\/strong><\/td>\n<td>M\u00e9trique<\/td>\n<\/tr>\n<tr>\n<td><strong>Application<\/strong><\/td>\n<td>Heavy Industry, Outdoor Construction, Marine Environments, Infrastructure<\/td>\n<\/tr>\n<tr>\n<td><strong>Certifications<\/strong><\/td>\n<td>ISO9001, ISO14001, ISO45001, SGS<\/td>\n<\/tr>\n<tr>\n<td><strong>Options d'emballage<\/strong><\/td>\n<td>Petit paquet+carton+palette ; sac\/bo\u00eete avec palette<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h4><strong>Hot-Dip Galvanizing (HDG) Explained<\/strong><\/h4>\n<p>Hot-dip galvanizing is a robust corrosion protection process where the finished carbon steel bolt is completely immersed in a bath of molten zinc at high temperatures. This creates a series of zinc-iron alloy layers, topped by a pure zinc layer.<\/p>\n<ul>\n<li><strong>Superior Protection:<\/strong> The coating is significantly thicker than standard zinc plating, providing long-lasting barrier protection.<\/li>\n<li><strong>Sacrificial Protection:<\/strong> If the coating is scratched or damaged, the surrounding zinc will corrode first (acting as a &#8220;sacrificial anode&#8221;) to protect the underlying steel from rust.<\/li>\n<li><strong>Complete Coverage:<\/strong> The immersion process ensures all surfaces, including edges, corners, and threads, are fully coated.<\/li>\n<\/ul>\n<h4><strong>DIN 933 Standard Explained<\/strong><\/h4>\n<p>Le <strong>DIN 933<\/strong> standard specifies the bolt&#8217;s geometry:<\/p>\n<ul>\n<li><strong>Hexagonal Head:<\/strong> Designed for high torque application with standard wrenches and sockets.<\/li>\n<li><strong>Full Thread:<\/strong> The shank is threaded along its entire length. This is ideal for applications where the bolt is screwed into a tapped hole or when clamping force needs to be distributed over the full length with a nut.<\/li>\n<\/ul>\n<h4><strong>Caract\u00e9ristiques principales<\/strong><\/h4>\n<ul>\n<li><strong>Maximum Corrosion Resistance:<\/strong> The HDG finish provides exceptional protection against rust in humid, rainy, coastal, and industrial environments.<\/li>\n<li><strong>Heavy-Duty and Durable:<\/strong> The thick, metallurgically bonded coating is abrasion-resistant and built to last.<\/li>\n<li><strong>Full Thread Engagement:<\/strong> The DIN 933 design allows for versatile use in tapped holes or with nuts for full clamping length.<\/li>\n<li><strong>Cost-Effective Long-Term Solution:<\/strong> Offers a superior lifespan in corrosive conditions compared to plated or coated bolts, reducing maintenance and replacement costs.<\/li>\n<\/ul>\n<h4><strong>Applications appropri\u00e9es<\/strong><\/h4>\n<ul>\n<li><strong>Outdoor Structural Steel:<\/strong> Bridges, factory buildings, stadiums, and support structures.<\/li>\n<li><strong>Highway and Infrastructure:<\/strong> Guardrail installation, road sign mounting, and utility pole hardware.<\/li>\n<li><strong>Coastal and Marine Environments:<\/strong> Docks, piers, and equipment exposed to salt spray.<\/li>\n<li><strong>Telecommunication and Power Transmission:<\/strong> Cellular towers and electrical pylons.<\/li>\n<li><strong>Agricultural and Outdoor Machinery Assembly.<\/strong><\/li>\n<\/ul>\n<h4><strong>Lignes directrices pour l'installation<\/strong><\/h4>\n<ol>\n<li><strong>Use Matching Components:<\/strong> Always use <strong>hot-dip galvanized nuts and washers<\/strong> with HDG bolts. The nuts must be tapped oversize to accommodate the thick zinc coating on the bolt threads.<\/li>\n<li>Align the holes in the components to be fastened.<\/li>\n<li>Insert the HDG bolt through the holes.<\/li>\n<li>Place the HDG washer and thread the HDG nut onto the bolt.<\/li>\n<li>Use a correctly sized wrench or socket to tighten the nut to the torque specified for the project. Avoid excessive over-tightening, which can damage the threads or coating.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>The Duojia Hot-Dip Galvanized (HDG) DIN 933 Hex Bolt is a heavy-duty fastener engineered for maximum corrosion resistance in severe environments. Manufactured from high-strength carbon steel, this bolt is fully threaded according to the DIN 933 standard and undergoes a hot-dip galvanizing process. This creates a thick, durable, and metallurgically bonded zinc coating, making it the ideal choice for outdoor construction, marine applications, coastal areas, and any industrial setting where long-term protection against rust and corrosion is critical.<\/p>","protected":false},"featured_media":1199,"template":"","meta":[],"product_brand":[],"product_cat":[143],"product_tag":[102,122,145,147,151,155],"class_list":{"0":"post-640","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-hex-bolt","7":"product_tag-stainless-steel-anchor-bolts","8":"product_tag-anchor-bolts-supplier","9":"product_tag-hex-head-bolt","10":"product_tag-m6-hex-bolt","11":"product_tag-m8-hex-bolt","12":"product_tag-stainless-hex-head-bolts","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product\/640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/media\/1199"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/media?parent=640"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product_brand?post=640"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product_cat?post=640"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/fr\/wp-json\/wp\/v2\/product_tag?post=640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}