{"id":667,"date":"2025-10-29T07:35:50","date_gmt":"2025-10-29T07:35:50","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/hex-socket-countersunk-head-cap-bolt\/"},"modified":"2025-10-31T09:34:07","modified_gmt":"2025-10-31T09:34:07","slug":"hex-socket-countersunk-head-cap-bolt","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/de\/product\/hex-socket-countersunk-head-cap-bolt\/","title":{"rendered":"Hex Socket Countersunk Head Cap Bolt"},"content":{"rendered":"<h4><strong>Product Details<\/strong><\/h4>\n<p>These premium screws are defined by their unique head design, superior material, and high-performance drive system.<\/p>\n<ul>\n<li><strong>DIN 7991 Countersunk Head:<\/strong> The defining characteristic of this screw is its countersunk (CSK) or &#8220;flat head&#8221; design. The head has a flat top and a conical bearing surface (typically 90 degrees) that fits perfectly into a pre-drilled countersunk hole. This allows the screw head to sit completely flush with the surrounding material, creating a smooth, safe, and aesthetically pleasing surface free of protrusions.<\/li>\n<li><strong>Internal Hex Socket (Allen) Drive:<\/strong> The head features an internal hexagonal recess, designed for use with a hex key (Allen wrench). This drive style allows for high-torque application without the risk of cam-out, ensuring a secure and reliable fastening. The internal nature of the drive also protects it from external damage.<\/li>\n<li><strong>Premium Stainless Steel Construction:<\/strong> The core advantage of these screws lies in their material composition, available in grades to suit specific environmental demands:\n<ul>\n<li><strong>A2 Stainless Steel (Type 304):<\/strong> The most popular choice, offering excellent corrosion resistance in freshwater, atmospheric conditions, and food-grade environments. It is ideal for general construction, furniture, and machinery.<\/li>\n<li><strong>A4 Stainless Steel (Type 316):<\/strong> Known as &#8220;marine grade,&#8221; A4 contains molybdenum, which provides superior resistance to chlorides (saltwater), acids, and other harsh chemicals. It is essential for marine, coastal, and chemical plant applications.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Plain Finish:<\/strong> These screws are supplied with the natural, bright finish of stainless steel. They are inherently corrosion-resistant and require no additional plating, ensuring a durable, clean surface that will not chip, flake, or rust.<\/li>\n<\/ul>\n<h4><strong>Product Parameters<\/strong><\/h4>\n<p>The technical specifications for our Stainless Steel DIN 7991 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>Hexagon Socket Countersunk Head Cap Bolt DIN 7991<\/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>Stainless Steel (SS304\/A2, SS316\/A4)<\/td>\n<\/tr>\n<tr>\n<td><strong>Property Class \/ Grade<\/strong><\/td>\n<td>A2-70, A4-70, A4-80<\/td>\n<\/tr>\n<tr>\n<td><strong>Surface Treatment<\/strong><\/td>\n<td>Plain (Bright Finish)<\/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>M4 &#8211; M24<\/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 installation with superior corrosion resistance<\/td>\n<\/tr>\n<tr>\n<td><strong>Application<\/strong><\/td>\n<td>Machinery, Furniture, Architectural Hardware, Heavy 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 flawless finish and long-lasting reliability:<\/p>\n<ul>\n<li><strong>Perfect Flush-Mount Finish:<\/strong> The countersunk head design allows the screw to sit perfectly level with the material surface, creating a smooth, clean, and snag-free finish.<\/li>\n<li><strong>Superior Corrosion Resistance:<\/strong> Manufactured from A2 and A4 &#8220;marine grade&#8221; stainless steel, providing exceptional protection against rust, moisture, and chemicals for long-term durability.<\/li>\n<li><strong>High-Strength and Reliable:<\/strong> Available in high-tensile grades like A2-70 and A4-80, ensuring strong and secure clamping force for demanding applications.<\/li>\n<li><strong>Secure High-Torque Drive:<\/strong> The internal hex socket allows for controlled, high-torque tightening without the risk of stripping the drive, ensuring a solid connection.<\/li>\n<li><strong>Hygienic and Aesthetic:<\/strong> The smooth, non-porous surface of stainless steel is easy to clean, making it ideal for food-grade and medical applications, while the flush finish offers a high-end, professional look.<\/li>\n<li><strong>DIN 7991 Standard Compliance:<\/strong> Manufactured to precise international standards, guaranteeing dimensional accuracy, consistent quality, and interchangeability.<\/li>\n<\/ul>\n<h4><strong>Product Applications<\/strong><\/h4>\n<p>The combination of a flush-mount design and superior material properties makes these screws ideal for a wide range of applications:<\/p>\n<ul>\n<li><strong>Architectural and Woodworking:<\/strong> Perfect for fastening hardware, panels, and trim in high-end furniture, cabinetry, decking, and architectural installations where a clean appearance is critical.<\/li>\n<li><strong>Machinery and Tooling:<\/strong> Widely used for securing die fixtures, machine guards, and components where a protruding head would cause interference or a safety hazard.<\/li>\n<li><strong>Electronics:<\/strong> Ideal for mounting panels, faceplates, and components in electronic enclosures and racks to achieve a smooth, professional exterior.<\/li>\n<li><strong>Marine and Automotive:<\/strong> Used in boat building, vehicle modifications, and motorsports for fastening panels and fittings where a snag-free surface and corrosion resistance are essential.<\/li>\n<li><strong>General Manufacturing:<\/strong> A versatile fastener for any assembly that benefits from a strong, corrosion-resistant bolt with a flush finish.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Our DIN 7991 Stainless Steel Hex Socket Countersunk Head Cap Screws are the ultimate fastening solution for applications requiring a perfectly flush, snag-free surface combined with exceptional corrosion resistance. These high-strength screws feature a flat-topped, conical head designed to sit level with or below the surface of the material when installed in a countersunk hole. Manufactured from premium stainless steel grades like A2 (SS304) and A4 (SS316), they offer unparalleled durability in harsh environments. Ideal for machinery, architectural installations, and high-performance assemblies, these screws provide a clean, professional aesthetic without sacrificing strength or reliability.<\/p>","protected":false},"featured_media":1308,"template":"","meta":[],"product_brand":[],"product_cat":[195],"product_tag":[102,132,145,146,179,201],"class_list":{"0":"post-667","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\/667","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\/1308"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/media?parent=667"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_brand?post=667"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_cat?post=667"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/de\/wp-json\/wp\/v2\/product_tag?post=667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}