{"id":5731,"date":"2026-05-14T17:21:05","date_gmt":"2026-05-14T09:21:05","guid":{"rendered":"https:\/\/xzfastener.com\/?post_type=product&p=5731"},"modified":"2026-05-14T17:23:10","modified_gmt":"2026-05-14T09:23:10","slug":"en-14399-82007-zinc-plated-structural-carbon-steel-hex-bolt-high-strength-plain-hex-head-fastener","status":"publish","type":"product","link":"https:\/\/xzfastener.com\/vi\/products\/en-14399-82007-zinc-plated-structural-carbon-steel-hex-bolt-high-strength-plain-hex-head-fastener\/","title":{"rendered":"EN 14399-8:2007 Zinc Plated Structural Carbon Steel Hex Bolt High Strength Plain Hex Head Fastener"},"content":{"rendered":"

Product Description<\/h2>\n

The EN 14399-8:2007 Zinc Plated Structural Carbon Steel Hex Bolt<\/strong> is a high-strength fastening component designed for structural steel connections, construction projects, machinery assembly, bridge engineering, steel frames, and heavy-duty industrial applications.<\/p>\n

Manufactured from structural-grade carbon steel<\/strong>, this bolt provides reliable mechanical strength, strong clamping performance, and stable fastening under demanding working conditions. The plain hex head design<\/strong> allows easy installation with standard spanners, sockets, or torque tools, while the partially threaded shank helps improve shear resistance in structural connections.<\/p>\n

The zinc plated surface finish<\/strong> provides additional protection against rust and oxidation, making the bolt suitable for general industrial, construction, and steel structure applications. For projects requiring strict structural performance, this bolt can be supplied together with matching nuts and washers according to customer drawings, technical specifications, or EN-related requirements.<\/p>\n

\n

Key Features<\/h2>\n
    \n
  • Structural carbon steel hex bolt<\/li>\n
  • Designed to fit EN 14399-8:2007<\/strong> fastening applications<\/li>\n
  • Zinc plated surface for corrosion protection<\/li>\n
  • High strength performance for structural connections<\/li>\n
  • Plain hex head for easy tool installation<\/li>\n
  • Partial thread design for improved shear resistance<\/li>\n
  • Suitable for steel structure, machinery, construction, and bridge projects<\/li>\n
  • OEM and ODM customization available<\/li>\n
  • Matching nuts and washers can be supplied as a complete set<\/li>\n<\/ul>\n
    \n

    Product Specifications<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Item<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
    Product Name<\/td>\nStructural Carbon Steel Hex Bolt<\/td>\n<\/tr>\n
    Standard<\/td>\nEN 14399-8:2007 \/ Customized Standard<\/td>\n<\/tr>\n
    Bolt Type<\/td>\nStructural Hex Bolt<\/td>\n<\/tr>\n
    Head Type<\/td>\nPlain Hex Head<\/td>\n<\/tr>\n
    Material<\/td>\nCarbon Steel<\/td>\n<\/tr>\n
    Surface Treatment<\/td>\nZinc Plated<\/td>\n<\/tr>\n
    Thread Type<\/td>\nMetric Thread<\/td>\n<\/tr>\n
    Thread Design<\/td>\nPartial Thread \/ Full Thread Optional<\/td>\n<\/tr>\n
    Strength Grade<\/td>\nHigh Strength Grade Available<\/td>\n<\/tr>\n
    Color<\/td>\nSilver \/ Gray Zinc Finish<\/td>\n<\/tr>\n
    Application<\/td>\nSteel Structure, Construction, Machinery, Bridge, Industrial Assembly<\/td>\n<\/tr>\n
    Custom Service<\/td>\nOEM \/ ODM Supported<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Material and Surface Treatment<\/h2>\n

    This bolt is made from carbon steel<\/strong>, which offers good strength, durability, and cost-effectiveness for structural fastening applications. The zinc plated finish helps protect the steel surface from corrosion during storage, transportation, and normal use.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n
    Material<\/th>\nSurface Finish<\/th>\nMain Benefit<\/th>\n<\/tr>\n<\/thead>\n
    Carbon Steel<\/td>\nZinc Plated<\/td>\nGood corrosion protection and economical cost<\/td>\n<\/tr>\n
    Carbon Steel<\/td>\nHot Dip Galvanized<\/td>\nBetter outdoor corrosion resistance<\/td>\n<\/tr>\n
    Carbon Steel<\/td>\nBlack Oxide<\/td>\nDark appearance, suitable for machinery fasteners<\/td>\n<\/tr>\n
    Alloy Steel<\/td>\nZinc Plated \/ Black Oxide<\/td>\nHigher strength option<\/td>\n<\/tr>\n
    Stainless Steel<\/td>\nPlain \/ Passivated<\/td>\nExcellent corrosion resistance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Note:<\/strong> The product image shows a rough gray metallic surface, which may also look similar to hot dip galvanized finish<\/strong>. If the actual product is ordinary electro zinc plated, the surface will usually appear smoother and brighter.<\/p>\n

    \n

    Product Advantages<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Advantage<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
    Structural Fastening Performance<\/td>\nSuitable for steel-to-steel structural connections and heavy-duty assembly.<\/td>\n<\/tr>\n
    High Strength Carbon Steel<\/td>\nProvides strong load-bearing capacity and reliable mechanical performance.<\/td>\n<\/tr>\n
    Hex Head Design<\/td>\nEasy to tighten with standard wrenches, sockets, or torque tools.<\/td>\n<\/tr>\n
    Zinc Plated Protection<\/td>\nHelps reduce rust and oxidation compared with plain carbon steel.<\/td>\n<\/tr>\n
    Partial Thread Option<\/td>\nSmooth shank section can improve shear resistance in structural joints.<\/td>\n<\/tr>\n
    Custom Production<\/td>\nSize, grade, length, thread, finish, and packaging can be customized.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Common Applications<\/h2>\n

    The EN 14399-8:2007 zinc plated structural carbon steel hex bolt<\/strong> is widely used in projects that require reliable fastening strength and stable connection performance.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Industry<\/th>\nTypical Application<\/th>\n<\/tr>\n<\/thead>\n
    Steel Structure<\/td>\nSteel beam connection, frame assembly, column joint fastening<\/td>\n<\/tr>\n
    Construction<\/td>\nBuilding supports, steel plates, brackets, heavy-duty connections<\/td>\n<\/tr>\n
    Bridge Engineering<\/td>\nBridge components, structural plates, support systems<\/td>\n<\/tr>\n
    Machinery<\/td>\nEquipment installation, machine frame assembly, industrial fixing<\/td>\n<\/tr>\n
    Infrastructure<\/td>\nPower facilities, railway systems, public engineering projects<\/td>\n<\/tr>\n
    Metal Fabrication<\/td>\nSteel frames, welded structures, prefabricated components<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Why Choose EN 14399 Structural Hex Bolts?<\/h2>\n

    EN 14399 series structural bolts are commonly used in steel structure connections where strength, safety, and fastening reliability are important. Compared with ordinary hex bolts, structural bolts are usually used as part of a complete assembly with matching nuts and washers.<\/p>\n

    The hex head design<\/strong> provides good torque transmission during installation, while the carbon steel body offers strong mechanical performance. The zinc plated finish gives the bolt improved surface protection, making it suitable for many industrial and construction environments.<\/p>\n

    For strict engineering projects, it is recommended to confirm the required standard, bolt grade, nut grade, washer type, thread length, coating thickness, and inspection certificate before ordering.<\/p>\n

    \n

    Available Custom Options<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n
    Custom Item<\/th>\nAvailable Options<\/th>\n<\/tr>\n<\/thead>\n
    Diameter<\/td>\nM12, M16, M20, M22, M24, M27, M30, Custom Sizes<\/td>\n<\/tr>\n
    Length<\/td>\nAccording to drawing or project requirement<\/td>\n<\/tr>\n
    Material<\/td>\nCarbon Steel, Alloy Steel, Stainless Steel<\/td>\n<\/tr>\n
    Grade<\/td>\n8.8, 10.9, 12.9, Customized Grade<\/td>\n<\/tr>\n
    Surface Finish<\/td>\nZinc Plated, Hot Dip Galvanized, Black Oxide, Plain<\/td>\n<\/tr>\n
    Thread<\/td>\nMetric Coarse Thread, Fine Thread, Full Thread, Partial Thread<\/td>\n<\/tr>\n
    Head Type<\/td>\nHex Head, Heavy Hex Head, Customized Head<\/td>\n<\/tr>\n
    Packaging<\/td>\nBulk Carton, Small Box, Wooden Case, Pallet<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Matching Nuts and Washers<\/h2>\n

    For structural applications, bolts are usually used together with matching nuts and washers to achieve stable fastening performance.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n
    Matching Part<\/th>\nAvailable Option<\/th>\n<\/tr>\n<\/thead>\n
    H\u1ea1t<\/td>\nHex Nut, Heavy Hex Nut, Structural Nut<\/td>\n<\/tr>\n
    M\u00e1y gi\u1eb7t<\/td>\nFlat Washer, Hardened Washer, Structural Washer<\/td>\n<\/tr>\n
    Assembly<\/td>\nBolt + Nut + Washer Set<\/td>\n<\/tr>\n
    Packaging<\/td>\nBulk Packing \/ Set Packing \/ Customized Packing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Quality Control<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Inspection Item<\/th>\nPurpose<\/th>\n<\/tr>\n<\/thead>\n
    Dimension Inspection<\/td>\nCheck diameter, length, head size, shank length, and thread length<\/td>\n<\/tr>\n
    Thread Gauge Test<\/td>\nEnsure accurate thread fit with matching nuts<\/td>\n<\/tr>\n
    Hardness Test<\/td>\nVerify mechanical strength and grade requirement<\/td>\n<\/tr>\n
    Tensile Test<\/td>\nConfirm load-bearing performance<\/td>\n<\/tr>\n
    Surface Inspection<\/td>\nCheck zinc plating quality, appearance, and coating uniformity<\/td>\n<\/tr>\n
    Assembly Test<\/td>\nEnsure bolt, nut, and washer compatibility<\/td>\n<\/tr>\n
    Packaging Inspection<\/td>\nEnsure safe export packing and correct labels<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    FAQ<\/h2>\n

    1. What is an EN 14399 structural bolt?<\/h3>\n

    An EN 14399 structural bolt is a high-strength bolt used for structural steel connections. It is commonly used together with matching nuts and washers in steel structures, bridges, construction, and heavy-duty industrial projects.<\/p>\n

    2. What does EN 14399-8:2007 mean?<\/h3>\n

    EN 14399-8:2007 refers to a European standard related to high-strength structural bolting assemblies. If your project requires strict compliance, the exact bolt type, nut, washer, grade, and certificate should be confirmed before production.<\/p>\n

    3. What material is this bolt made from?<\/h3>\n

    This product is made from carbon steel<\/strong>, which provides good strength and durability for structural fastening applications.<\/p>\n

    4. What is the surface treatment?<\/h3>\n

    The surface treatment is zinc plated<\/strong>, which helps protect the bolt from rust and oxidation. Hot dip galvanized, black oxide, and plain finish options are also available.<\/p>\n

    5. Is this bolt suitable for outdoor use?<\/h3>\n

    Zinc plated carbon steel bolts can be used in general environments. For long-term outdoor, humid, or highly corrosive conditions, hot dip galvanized<\/strong> or stainless steel<\/strong> bolts are recommended.<\/p>\n

    6. Is this bolt fully threaded or partially threaded?<\/h3>\n

    The product shown is a partially threaded hex bolt<\/strong>. Full thread bolts can also be customized according to customer requirements.<\/p>\n

    7. Can you supply nuts and washers together?<\/h3>\n

    Yes. We can supply matching hex nuts, heavy hex nuts, flat washers, hardened washers, and complete bolt-nut-washer assemblies.<\/p>\n

    8. Can the size and grade be customized?<\/h3>\n

    Yes. Diameter, length, thread pitch, material, strength grade, surface treatment, packaging, and labeling can all be customized according to drawings, samples, or project specifications.<\/p>\n

    \n

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