{"id":671,"date":"2025-10-29T07:35:51","date_gmt":"2025-10-29T07:35:51","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/din7991-csk-hex-socket-bolts\/"},"modified":"2025-10-31T09:47:18","modified_gmt":"2025-10-31T09:47:18","slug":"din7991-csk-hex-socket-bolts","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/de\/product\/din7991-csk-hex-socket-bolts\/","title":{"rendered":"DIN7991 CSK Hex Socket Bolts"},"content":{"rendered":"<h4><strong>Product Details<\/strong><\/h4>\n<p>These screws are engineered for a precise fit, reliable performance, and a clean appearance.<\/p>\n<ul>\n<li><strong>DIN 7991 Countersunk Head:<\/strong> The screw features a flat-topped, conical head (typically with a 90-degree angle) manufactured to precise DIN 7991 specifications. It is designed to fit into a pre-drilled countersunk hole, allowing the head to sit completely flush with or below the surface of the workpiece for a smooth, snag-free finish.<\/li>\n<li><strong>Internal Hex Socket (Allen) Drive:<\/strong> The head is equipped with a deep, crisp internal hexagonal recess, designed for use with a standard hex key (Allen wrench). This drive system allows for high-torque application, minimizes the risk of cam-out, and provides a secure grip for easy installation and removal.<\/li>\n<li><strong>High-Strength Carbon Steel:<\/strong> Forged from quality carbon steel, these screws are available in a range of property classes to handle different load requirements:\n<ul>\n<li><strong>Grade 4.8:<\/strong> Standard strength for general-purpose, low-load applications.<\/li>\n<li><strong>Grade 8.8:<\/strong> High-tensile steel suitable for most industrial, automotive, and structural applications.<\/li>\n<li><strong>Grade 10.9 &amp; 12.9:<\/strong> Very high-strength steels for critical, high-stress assemblies that demand maximum clamping force and load-bearing capacity.<\/li>\n<\/ul>\n<\/li>\n<li><strong>White\/Blue Zinc Plating (Clear Zinc):<\/strong> These screws are coated with a bright White\/Blue Zinc Plating. This electro-galvanized finish consists of a layer of zinc with a clear (or slightly blue-tinted) chromate passivation sealant. It provides effective corrosion resistance for indoor and mild-environment applications, along with a clean, bright, and slightly iridescent silver-blue appearance that is both protective and aesthetically pleasing.<\/li>\n<\/ul>\n<h4><strong>Product Parameters<\/strong><\/h4>\n<p>The technical specifications for our DIN 7991 White\/Blue Zinc Plated Hex Socket Countersunk Head Cap Screws 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>CSK Flat Head Hex Socket Bolts DIN7991<\/td>\n<\/tr>\n<tr>\n<td><strong>Standard<\/strong><\/td>\n<td>DIN 7991<\/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>4.8, 8.8, 10.9, 12.9<\/td>\n<\/tr>\n<tr>\n<td><strong>Surface Treatment<\/strong><\/td>\n<td>White\/Blue Zinc Plated (Clear Zinc)<\/td>\n<\/tr>\n<tr>\n<td><strong>Head Style<\/strong><\/td>\n<td>Countersunk (CSK) \/ Flat Head<\/td>\n<\/tr>\n<tr>\n<td><strong>Drive Style<\/strong><\/td>\n<td>Internal Hex Socket (Allen)<\/td>\n<\/tr>\n<tr>\n<td><strong>Diameter Range<\/strong><\/td>\n<td>M3 &#8211; M16<\/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>Flush-mount design with a bright, corrosion-resistant finish<\/td>\n<\/tr>\n<tr>\n<td><strong>Application<\/strong><\/td>\n<td>Furniture, Electronics, Machinery, Heavy &amp; General Industry<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h4><strong>Product Features<\/strong><\/h4>\n<p>These high-performance screws are engineered to deliver a superior finish and dependable performance:<\/p>\n<ul>\n<li><strong>Perfectly Flush and Smooth Surface:<\/strong> The countersunk head design allows the screw to sit level with the material, creating a smooth, professional, and safe surface with no protrusions.<\/li>\n<li><strong>Reliable Corrosion Protection:<\/strong> The White\/Blue Zinc plating offers good resistance to rust and corrosion, making it a dependable choice for a wide range of indoor and general-purpose applications.<\/li>\n<li><strong>High Strength for Demanding Loads:<\/strong> Available in high-tensile grades (8.8, 10.9, 12.9), these screws provide the strength and clamping force required for load-bearing and critical joints.<\/li>\n<li><strong>Clean and Bright Aesthetic:<\/strong> The clear zinc finish provides a bright, professional appearance that complements a variety of materials and designs.<\/li>\n<li><strong>Secure, High-Torque Fastening:<\/strong> The internal hex socket ensures a non-slip grip, allowing for controlled and reliable tightening to achieve optimal clamping force.<\/li>\n<li><strong>Cost-Effective and Versatile:<\/strong> Zinc plating provides a highly effective and economical solution for corrosion protection, making these screws a versatile staple for countless projects.<\/li>\n<\/ul>\n<h4><strong>Product Applications<\/strong><\/h4>\n<p>The combination of a flush profile and a bright, protective finish makes these screws a popular choice across many industries:<\/p>\n<ul>\n<li><strong>Furniture Assembly and Cabinetry:<\/strong> Widely used for creating strong, invisible joints in wood and composite materials, ensuring a clean and high-end look.<\/li>\n<li><strong>Electronics and Appliances:<\/strong> Ideal for securing casings, panels, and internal components where a smooth exterior surface is required.<\/li>\n<li><strong>Machinery and Equipment:<\/strong> Used for attaching panels, guards, and plates where a non-protruding fastener is necessary to avoid interference with moving parts.<\/li>\n<li><strong>Architectural Metalwork and Interior Design:<\/strong> Perfect for installing fixtures, brackets, and decorative elements where fasteners must be strong yet discreet.<\/li>\n<li><strong>General Manufacturing and Prototyping:<\/strong> A versatile and reliable fastener for a wide array of assembly and fabrication projects in workshops and factories.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Our DIN 7991 White\/Blue Zinc Plated Hex Socket Countersunk Head Cap Screws are the quintessential choice for assemblies requiring both strength and a perfectly flush, clean finish. Manufactured from high-quality carbon steel and available in various strength grades, these screws are coated with a bright zinc plating for reliable corrosion protection in general-purpose applications. The countersunk head allows the screw to sit level with the material surface, while the internal hex drive ensures secure, high-torque installation. They are the ideal fastener for furniture, electronics, machinery, and architectural applications where a smooth profile and a bright, aesthetic finish are essential.<\/p>","protected":false},"featured_media":1324,"template":"","meta":[],"product_brand":[],"product_cat":[195],"product_tag":[102,132,145,146,179,201],"class_list":{"0":"post-671","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-hex-socket-bolt","7":"product_tag-stainless-steel-anchor-bolts","8":"product_tag-anchor-bolts-manufacturer","9":"product_tag-hex-head-bolt","10":"product_tag-hex-bolts-and-nuts","11":"product_tag-hex-flange-bolt","12":"product_tag-hex-bolt-socket","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product\/671","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\/1324"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/media?parent=671"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_brand?post=671"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_cat?post=671"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_tag?post=671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}