{"id":5398,"date":"2026-05-11T15:06:18","date_gmt":"2026-05-11T07:06:18","guid":{"rendered":"https:\/\/xzfastener.com\/?post_type=product&p=5398"},"modified":"2026-05-11T17:00:12","modified_gmt":"2026-05-11T09:00:12","slug":"din-931-iso-4014-hex-head-bolts-stainless-steel-a2-a4-full-thread-partial-thread-various-sizes-strength-grades-corrosion-resistant-fasteners","status":"publish","type":"product","link":"https:\/\/xzfastener.com\/vi\/products\/din-931-iso-4014-hex-head-bolts-stainless-steel-a2-a4-full-thread-partial-thread-various-sizes-strength-grades-corrosion-resistant-fasteners\/","title":{"rendered":"DIN 931 \/ ISO 4014 Hex Head Bolts | Stainless Steel A2 & A4 | Full Thread \/ Partial Thread | Various Sizes & Strength Grades | Corrosion-Resistant Fasteners"},"content":{"rendered":"

Product Description<\/h2>\n

The DIN 931 \/ ISO 4014 Hex Head Bolts<\/strong> are internationally standardized fasteners designed for high-strength and precision fastening requirements. Manufactured with a hexagonal head and partially threaded shank, these bolts provide excellent clamping force, reliable mechanical performance, and convenient installation using standard tools.<\/p>\n

Produced according to DIN 931<\/strong> and ISO 4014<\/strong> specifications, these stainless steel hex head bolts ensure dimensional accuracy, thread consistency, and dependable fastening quality across various industrial fastening requirements.<\/p>\n

Made from premium Stainless Steel A2 and A4<\/strong>, these bolts offer outstanding corrosion resistance, oxidation resistance, and long-term durability. Their robust construction and standardized design make them suitable for environments requiring stable fastening performance and resistance to moisture, chemicals, and temperature variations.<\/p>\n

\n

What Are DIN 931 \/ ISO 4014 Hex Head Bolts?<\/h2>\n

DIN 931 and ISO 4014 are international standards that define the dimensions, tolerances, threading, and mechanical properties of hex head bolts with partial thread configurations.<\/p>\n

These bolts feature:<\/p>\n

    \n
  • A six-sided hexagonal head<\/li>\n
  • Metric threading<\/li>\n
  • Partially threaded shank<\/li>\n
  • Standardized dimensions for interchangeability<\/li>\n
  • High tightening torque capability<\/li>\n<\/ul>\n

    The partially threaded structure improves shear strength and load distribution compared with fully threaded bolts in many fastening assemblies.<\/p>\n

    \n

    DIN 931 vs ISO 4014<\/h2>\n

    DIN 931 and ISO 4014 are highly similar standards for metric hex head bolts. ISO 4014 is considered the international equivalent that gradually replaced DIN 931 in many global markets.<\/p>\n

    \n
    \n\n\n\n\n\n\n
    Standard<\/th>\nDescription<\/th>\nThread Type<\/th>\nMeasurement System<\/th>\nHead Type<\/th>\n<\/tr>\n<\/thead>\n
    DIN 931<\/td>\nGerman Industrial Standard<\/td>\nPartial Thread<\/td>\nMetric<\/td>\nHex Head<\/td>\n<\/tr>\n
    ISO 4014<\/td>\nInternational Standard Equivalent<\/td>\nPartial Thread<\/td>\nMetric<\/td>\nHex Head<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Both standards are widely recognized in international fastening systems and maintain strong dimensional compatibility.<\/p>\n

    \n

    Stainless Steel Material Options<\/h2>\n

    A2 Stainless Steel<\/h3>\n

    A2 stainless steel is equivalent to 304 stainless steel and provides excellent general corrosion resistance and mechanical stability.<\/p>\n

    Features:<\/strong><\/p>\n

      \n
    • Good corrosion resistance<\/li>\n
    • Excellent formability<\/li>\n
    • Strong oxidation resistance<\/li>\n
    • Suitable for humid environments<\/li>\n<\/ul>\n

      A4 Stainless Steel<\/h3>\n

      A4 stainless steel is similar to 316 stainless steel and contains molybdenum for enhanced corrosion resistance.<\/p>\n

      Features:<\/strong><\/p>\n

        \n
      • Superior chemical resistance<\/li>\n
      • Better saltwater corrosion protection<\/li>\n
      • Excellent durability in harsh environments<\/li>\n
      • Improved resistance to acids and chlorides<\/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
        Product Name<\/th>\nDIN 931 \/ ISO 4014 Hex Head Bolts<\/th>\n<\/tr>\n<\/thead>\n
        Standard<\/td>\nDIN 931 \/ ISO 4014<\/td>\n<\/tr>\n
        Material<\/td>\nStainless Steel A2 \/ A4<\/td>\n<\/tr>\n
        Head Type<\/td>\nHex Head<\/td>\n<\/tr>\n
        Thread Type<\/td>\nPartial Thread<\/td>\n<\/tr>\n
        Thread Standard<\/td>\nMetric<\/td>\n<\/tr>\n
        Diameter Range<\/td>\nM5 \u2013 M64<\/td>\n<\/tr>\n
        Length Range<\/td>\nCustomizable<\/td>\n<\/tr>\n
        Surface Finish<\/td>\nPlain Stainless Steel<\/td>\n<\/tr>\n
        Strength Grades<\/td>\nA2-50, A2-70, A4-70, A4-80<\/td>\n<\/tr>\n
        Corrosion Resistance<\/td>\nExcellent<\/td>\n<\/tr>\n
        Manufacturing Process<\/td>\nCold Forging \/ Hot Forging<\/td>\n<\/tr>\n
        Packaging<\/td>\nBulk \/ Small Box \/ Pallet Packaging<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
        \n

        Key Features of DIN 931 \/ ISO 4014 Hex Head Bolts<\/h2>\n

        1. High Corrosion Resistance<\/h3>\n

        Manufactured from stainless steel A2 and A4, these bolts provide excellent resistance against rust, oxidation, moisture, and chemical exposure.<\/p>\n

        2. Precision Manufacturing<\/h3>\n

        Produced according to DIN 931 and ISO 4014 standards, ensuring consistent thread accuracy and dimensional precision.<\/p>\n

        3. Strong Mechanical Performance<\/h3>\n

        The partially threaded design enhances shear strength and improves load-bearing capacity during fastening.<\/p>\n

        4. Easy Installation<\/h3>\n

        The hex head structure allows convenient installation and removal using common wrenches and socket tools.<\/p>\n

        5. Wide Size Availability<\/h3>\n

        Available in multiple diameters, lengths, and strength grades to meet diverse fastening requirements.<\/p>\n

        \n

        Mechanical Properties<\/h2>\n
        \n
        \n\n\n\n\n\n\n\n\n
        Grade<\/th>\nTensile Strength<\/th>\nCorrosion Resistance<\/th>\nCommon Material Equivalent<\/th>\n<\/tr>\n<\/thead>\n
        A2-50<\/td>\n500 MPa<\/td>\nExcellent<\/td>\nSS304<\/td>\n<\/tr>\n
        A2-70<\/td>\n700 MPa<\/td>\nExcellent<\/td>\nSS304<\/td>\n<\/tr>\n
        A4-70<\/td>\n700 MPa<\/td>\nSuperior<\/td>\nSS316<\/td>\n<\/tr>\n
        A4-80<\/td>\n800 MPa<\/td>\nSuperior<\/td>\nSS316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
        \n

        Surface Characteristics<\/h2>\n

        Unlike carbon steel bolts requiring external coatings, stainless steel hex head bolts achieve corrosion resistance directly through the chromium-rich alloy composition.<\/p>\n

        Benefits of Stainless Steel Surface:<\/h3>\n
          \n
        • No peeling or flaking coatings<\/li>\n
        • Long-lasting appearance<\/li>\n
        • Reduced maintenance requirements<\/li>\n
        • Enhanced oxidation resistance<\/li>\n
        • Improved durability in humid environments<\/li>\n<\/ul>\n
          \n

          Manufacturing Process<\/h2>\n

          DIN 931 \/ ISO 4014 Hex Head Bolts are typically produced through advanced cold forging or hot forging methods, followed by precision thread rolling and quality inspection.<\/p>\n

          Production Steps:<\/h3>\n
            \n
          1. Raw material selection<\/li>\n
          2. Wire drawing or bar preparation<\/li>\n
          3. Head forging<\/li>\n
          4. Thread rolling<\/li>\n
          5. Heat treatment (if required)<\/li>\n
          6. Surface cleaning and passivation<\/li>\n
          7. Dimensional and mechanical inspection<\/li>\n
          8. Packaging and shipment<\/li>\n<\/ol>\n

            Strict quality control ensures compliance with international fastening standards.<\/p>\n

            \n

            Available Customization Options<\/h2>\n
            \n
            \n\n\n\n\n\n\n\n\n\n\n
            Custom Option<\/th>\nAvailability<\/th>\n<\/tr>\n<\/thead>\n
            Custom Lengths<\/td>\nYes<\/td>\n<\/tr>\n
            Special Packaging<\/td>\nYes<\/td>\n<\/tr>\n
            Custom Marking<\/td>\nYes<\/td>\n<\/tr>\n
            Non-Standard Sizes<\/td>\nYes<\/td>\n<\/tr>\n
            Special Stainless Grades<\/td>\nAvailable Upon Request<\/td>\n<\/tr>\n
            OEM Service<\/td>\nSupported<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
            \n

            Advantages of Partial Thread Design<\/h2>\n

            The partial thread configuration of DIN 931 \/ ISO 4014 bolts provides several engineering advantages:<\/p>\n

              \n
            • Improved shear resistance<\/li>\n
            • Better alignment during assembly<\/li>\n
            • Reduced stress concentration<\/li>\n
            • Enhanced clamping performance<\/li>\n
            • Increased structural stability<\/li>\n<\/ul>\n

              This design is especially preferred when precise load distribution is required.<\/p>\n

              \n

              FAQ<\/h2>\n

              What is the difference between DIN 931 and ISO 4014?<\/h3>\n

              DIN 931 is the original German standard, while ISO 4014 is the international equivalent standard. Their dimensions and specifications are largely interchangeable.<\/p>\n

              Are DIN 931 bolts fully threaded?<\/h3>\n

              No. DIN 931 \/ ISO 4014 bolts are typically partially threaded hex head bolts. Fully threaded versions are generally covered under DIN 933 \/ ISO 4017.<\/p>\n

              What is the difference between A2 and A4 stainless steel?<\/h3>\n

              A2 stainless steel offers excellent general corrosion resistance, while A4 stainless steel provides enhanced resistance to chemicals, saltwater, and chloride environments.<\/p>\n

              What strength grades are available?<\/h3>\n

              Common stainless steel strength grades include A2-50, A2-70, A4-70, and A4-80.<\/p>\n

              Are custom sizes available?<\/h3>\n

              Yes. Custom diameters, lengths, thread pitches, and packaging options can usually be provided according to customer requirements.<\/p>\n

              Do stainless steel bolts require additional coating?<\/h3>\n

              No. Stainless steel bolts naturally resist corrosion due to their chromium content and typically do not require zinc plating or other protective coatings.<\/p>\n

              What is the advantage of a hex head bolt?<\/h3>\n

              Hex head bolts provide higher torque transmission, easier installation, and compatibility with standard tightening tools.<\/p>\n

              Are these bolts compliant with international standards?<\/h3>\n

              Yes. DIN 931 \/ ISO 4014 Hex Head Bolts are manufactured according to internationally recognized dimensional and mechanical standards.<\/p>","protected":false},"excerpt":{"rendered":"

              Product Description The DIN 931 \/ ISO 4014 Hex Head Bolts are internationally standardized fasteners designed for high-strength and precision fastening requirements. Manufactured with a hexagonal head and partially threaded shank, these bolts provide excellent clamping force, reliable mechanical performance, and convenient installation using standard tools. Produced according to DIN 931 and ISO 4014 specifications, […]<\/p>\n","protected":false},"featured_media":5403,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"fastener-coating":[95,37,94],"fastener-material":[43],"fastener-type":[53,474],"product_brand":[],"product_cat":[22,30],"product_tag":[],"class_list":{"0":"post-5398","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"fastener-coating-natural-finish","7":"fastener-coating-original-material","8":"fastener-coating-original-material-natural-finish","9":"fastener-material-stainless-steel","10":"fastener-type-bolts","11":"fastener-type-hex-head-bolt","12":"product_cat-standard-fasteners","13":"product_cat-high-strength-fasteners","15":"first","16":"instock","17":"shipping-taxable","18":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=5398"}],"version-history":[{"count":4,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5398\/revisions"}],"predecessor-version":[{"id":5405,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5398\/revisions\/5405"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media\/5403"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=5398"}],"wp:term":[{"taxonomy":"fastener-coating","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-coating?post=5398"},{"taxonomy":"fastener-material","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-material?post=5398"},{"taxonomy":"fastener-type","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-type?post=5398"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_brand?post=5398"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_cat?post=5398"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_tag?post=5398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}