{"id":646,"date":"2025-10-29T07:35:47","date_gmt":"2025-10-29T07:35:47","guid":{"rendered":"https:\/\/mj-anchor.com\/product\/black-eye-bolt\/"},"modified":"2025-10-31T06:35:22","modified_gmt":"2025-10-31T06:35:22","slug":"black-eye-bolt","status":"publish","type":"product","link":"https:\/\/mj-anchor.com\/ar\/product\/black-eye-bolt\/","title":{"rendered":"Black eye bolt"},"content":{"rendered":"<h4><strong>Crucial Clarifications on Product Specifications<\/strong><\/h4>\n<p>The product page contains several conflicting or generic data points. The following clarifications provide a precise and accurate understanding of this specific product line:<\/p>\n<ul>\n<li><strong>Finish Conflict (Black Oxide vs. Zinc Plated):<\/strong> The product title and finish field clearly state <strong>&#8220;Black Oxide Coating&#8221;<\/strong>, while the surface treatment field lists &#8220;zinc plated&#8221;. Black Oxide is a chemical conversion coating that provides mild corrosion resistance and an aesthetic black finish. Zinc plating is a metallic coating for more robust rust prevention. Given the product&#8217;s title and description, <strong>Black Oxide is the primary intended finish<\/strong>. Zinc plating may be available as an alternative, but the featured product is black oxide.<\/li>\n<li><strong>Grade Inconsistency:<\/strong> The &#8220;Grade&#8221; field lists both carbon steel property classes (4.8, 8.8, 10.9, 12.9) and stainless steel grades (A2-70, A4-70). Since the material is explicitly listed as <strong>&#8220;Carbon Steel&#8221;<\/strong>, only the carbon steel property classes are applicable to this product. The stainless steel grades are incorrect for this item.<\/li>\n<li><strong>Lifting Safety &amp; WLL:<\/strong> The term &#8220;Lifting Eye Bolt&#8221; implies it is suitable for hoisting loads. While high-strength grades (like 8.8, 10.9, 12.9) are designed for this, the DIN 444 standard itself is a dimensional standard, not a lifting performance standard. The actual safe <strong>Working Load Limit (WLL)<\/strong> depends on the material grade, size, and how the load is applied. <strong>Users must confirm the specific WLL from the manufacturer before using these bolts for any overhead lifting.<\/strong><\/li>\n<\/ul>\n<h4><strong>Product Parameters (Corrected and Clarified)<\/strong><\/h4>\n<div class=\"MarkdownTable_tableContainer__2k5Kh\" tabindex=\"0\" role=\"region\">\n<table>\n<thead>\n<tr>\n<th>Parameter Item<\/th>\n<th>Specification Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Product Name<\/strong><\/td>\n<td>Eye Bolt DIN 444<\/td>\n<\/tr>\n<tr>\n<td><strong>Standard<\/strong><\/td>\n<td>DIN 444<\/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>Material<\/strong><\/td>\n<td><strong>Carbon Steel<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Grades<\/strong><\/td>\n<td><strong>4.8 (Standard), 8.8, 10.9, 12.9 (High-Strength)<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Finish<\/strong><\/td>\n<td><strong>Black Oxide Coating<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Size Range<\/strong><\/td>\n<td>M4 to M24 (and larger, up to M36 as per the dimensional table)<\/td>\n<\/tr>\n<tr>\n<td><strong>Measurement System<\/strong><\/td>\n<td>Metric<\/td>\n<\/tr>\n<tr>\n<td><strong>Application<\/strong><\/td>\n<td>Heavy Industry, General Industry, Lifting, Rigging, Jigs &amp; Fixtures<\/td>\n<\/tr>\n<tr>\n<td><strong>\u26a0\ufe0f Safety Note<\/strong><\/td>\n<td><strong>Working Load Limit (WLL) must be confirmed before lifting. Not for angular lifting unless specified.<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h4><strong>Key Features<\/strong><\/h4>\n<ul>\n<li><strong>High-Strength for Lifting:<\/strong> Available in heat-treated, high-tensile grades (8.8, 10.9, 12.9) suitable for demanding lifting and rigging operations.<\/li>\n<li><strong>Conforms to DIN 444 Standard:<\/strong> Ensures dimensional consistency for use in jigs, fixtures, and machinery where precise fitment is required.<\/li>\n<li><strong>Durable Black Oxide Finish:<\/strong> Provides a protective surface that prevents galling, offers mild corrosion resistance, and is ideal for indoor industrial environments.<\/li>\n<li><strong>Versatile Connection Point:<\/strong> The elongated eye is designed to accept hooks, pins, shackles, and other rigging hardware.<\/li>\n<li><strong>Forged Construction:<\/strong> High-strength lifting eye bolts are typically forged (not just bent) for superior strength and load-bearing integrity.<\/li>\n<\/ul>\n<h4><strong>Typical Applications<\/strong><\/h4>\n<ul>\n<li><strong>Lifting and Hoisting:<\/strong> Attaching to machinery or heavy components to provide a secure point for lifting with cranes or hoists.<\/li>\n<li><strong>Jigs and Fixtures:<\/strong> Used as a pivot pin or clamping bolt in manufacturing and assembly jigs.<\/li>\n<li><strong>Securing and Tie-Downs:<\/strong> Creating robust anchor points for securing heavy loads during transport or in industrial settings.<\/li>\n<li><strong>Tensioning Systems:<\/strong> Used in conjunction with turnbuckles and other hardware to tension cables or rods.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The Duojia DIN 444 Eye Bolt is a high-performance fastener specifically designed for lifting, rigging, and heavy-duty securing applications. Manufactured in accordance with the <strong>DIN 444 standard<\/strong>, this bolt features a distinct, elongated eye (or loop) and a threaded shank. It is constructed from high-quality <strong>Carbon Steel<\/strong> and is available in various strength grades, including high-tensile options (8.8, 10.9, 12.9). The specified <strong>Black Oxide<\/strong> finish provides mild corrosion resistance and a non-reflective surface, making it ideal for industrial machinery, jigs, and fixtures.<\/p>","protected":false},"featured_media":1218,"template":"","meta":[],"product_brand":[],"product_cat":[161],"product_tag":[111,122,163,164,165,166,167],"class_list":{"0":"post-646","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-eye-bolt","7":"product_tag-eye-bolt-anchor","8":"product_tag-anchor-bolts-supplier","9":"product_tag-1-4-eye-bolt","10":"product_tag-stainless-steel-eye-bolts","11":"product_tag-heavy-duty-eye-bolts","12":"product_tag-3-8-eye-bolt","13":"product_tag-stainless-eye-bolt","15":"first","16":"instock","17":"shipping-taxable","18":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/product\/646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/media\/1218"}],"wp:attachment":[{"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/media?parent=646"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/product_brand?post=646"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/product_cat?post=646"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mj-anchor.com\/ar\/wp-json\/wp\/v2\/product_tag?post=646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}