{"id":2774,"date":"2026-06-05T14:34:59","date_gmt":"2026-06-05T12:34:59","guid":{"rendered":"https:\/\/www.efsfasteners.com\/products\/screws\/industrial-hex-head-screws\/"},"modified":"2026-07-17T15:56:31","modified_gmt":"2026-07-17T13:56:31","slug":"industrial-hex-head-screws","status":"publish","type":"page","link":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/","title":{"rendered":"Industrial Hex Head Screws"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--link_hover_color: var(--awb-color6);--link_color: var(--awb-color1);--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:20px;--awb-padding-bottom:20px;--awb-background-image:linear-gradient(180deg, var(--awb-color5) 0%,var(--awb-color3) 100%);--awb-flex-wrap:wrap;\" ><div class=\"awb-background-mask\" style=\"background-image:  url(https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/EFS_mask_1w.svg);opacity: 1 ;transform: scale(1, 1);mix-blend-mode:normal;\"><\/div><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-center fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_3_5 3_5 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:60%;--awb-margin-top-large:60px;--awb-spacing-right-large:3.2%;--awb-margin-bottom-large:60px;--awb-spacing-left-large:3.2%;--awb-width-medium:60%;--awb-order-medium:0;--awb-spacing-right-medium:3.2%;--awb-spacing-left-medium:3.2%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1 fusion-text-no-margin\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-bottom:10px;\"><p><a href=\"https:\/\/www.efsfasteners.com\/en\/products\/\">PRODUCTS<\/a> | <a href=\"https:\/\/www.efsfasteners.com\/en\/products\/screws\/\">SCREWS<\/a><\/p>\n<\/div><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\" style=\"--awb-text-color:var(--awb-color1);--awb-font-size:40px;\"><h1 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;font-size:1em;--fontSize:40;line-height:1.5;\">Industrial Hex Head Screws<\/h1><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_2_5 2_5 fusion-flex-column fusion-flex-align-self-stretch\" style=\"--awb-bg-position:center center;--awb-bg-size:cover;--awb-width-large:40%;--awb-margin-top-large:0px;--awb-spacing-right-large:4.8%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:4.8%;--awb-width-medium:40%;--awb-order-medium:0;--awb-spacing-right-medium:4.8%;--awb-spacing-left-medium:4.8%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"text-align:center;--awb-mask-url: url(https:\/\/www.efsfasteners.com\/wp-content\/plugins\/fusion-builder\/\/assets\/images\/masks\/mask-3.svg);--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none has-mask\"><img decoding=\"async\" width=\"800\" height=\"800\" alt=\"EFS - Prodotti - Vite testa esagonale bulloneria tecnica\" title=\"EFS &#8211; Prodotti &#8211; Viti testa esagonale\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/EFS_viti_2.jpg\" class=\"img-responsive wp-image-1070\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/EFS_viti_2-200x200.jpg 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/EFS_viti_2-400x400.jpg 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/EFS_viti_2-600x600.jpg 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/EFS_viti_2.jpg 800w\" sizes=\"(max-width: 640px) 100vw, 600px\" \/><\/span><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-section-separator section-separator triangle fusion-section-separator-1\" style=\"--awb-border-bottom:1px solid var(--awb-color3);--awb-spacer-height:1px;--awb-svg-margin-left:1.92%;--awb-svg-margin-right:1.92%;--awb-svg-margin-left-medium:1.92%;--awb-svg-margin-right-medium:1.92%;--awb-svg-margin-left-small:1.92%;--awb-svg-margin-right-small:1.92%;--awb-icon-color:var(--awb-color1);\"><div class=\"fusion-section-separator-svg\"><div class=\"divider-candy-arrow bottom\" style=\"top:0px;border-top-color: var(--awb-color3);\"><\/div><div class=\"divider-candy bottom\" style=\"bottom:-21px;border-bottom:1px solid var(--awb-color3);border-left:1px solid var(--awb-color3);\"><\/div><\/div><div class=\"fusion-section-separator-spacer\"><div class=\"fusion-section-separator-spacer-height\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:60px;--awb-padding-bottom:60px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\"><p>Industrial hex head screws are one of the most widely used fastening solutions in the machinery, heavy steel construction, Oil &amp; Gas, energy, railway and metal infrastructure sectors. Thanks to their versatility and high mechanical performance, they are used in applications subject to static and dynamic loads, continuous vibration and severe operating environments.<\/p>\n<p>Industrial hex head fasteners are used both in standardised assemblies and in special made-to-drawing production, where aspects such as traceability, surface treatments, dimensional inspections and material certifications become essential.<\/p>\n<p>The main reference standards include ISO 4014, ISO 4017, DIN 931 and DIN 933, standards used to define the geometries, tolerances and dimensional characteristics of industrial hex head screws.<br \/>\nEFS supports both standard and special supplies with certified European production, traceable materials and treatments dedicated to the actual operating conditions.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"awb-gallery-wrapper awb-gallery-wrapper-1 button-span-no\" style=\"--more-btn-alignment:center;\"><div style=\"margin:-5px;--awb-bordersize:0px;\" class=\"fusion-gallery fusion-gallery-container fusion-grid-2 fusion-columns-total-2 fusion-gallery-layout-grid fusion-gallery-1\"><div style=\"padding:5px;\" class=\"fusion-grid-column fusion-gallery-column fusion-gallery-column-2 hover-type-none\"><div class=\"fusion-gallery-image\"><a href=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-hex-head-screw-uni-5737-8.jpg\" rel=\"noreferrer\" data-rel=\"iLightbox[gallery_image_1]\" class=\"fusion-lightbox\" target=\"_self\"><img decoding=\"async\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-hex-head-screw-uni-5737-8.jpg\" width=\"800\" height=\"600\" alt=\"\" title=\"efs-hex-head-screw-uni-5737-8\" aria-label=\"efs-hex-head-screw-uni-5737-8\" class=\"img-responsive wp-image-2537\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-hex-head-screw-uni-5737-8-200x150.jpg 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-hex-head-screw-uni-5737-8-400x300.jpg 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-hex-head-screw-uni-5737-8-600x450.jpg 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-hex-head-screw-uni-5737-8.jpg 800w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 712px) 598px, (min-width: 640px) 712px, \" \/><\/a><\/div><\/div><div style=\"padding:5px;\" class=\"fusion-grid-column fusion-gallery-column fusion-gallery-column-2 hover-type-none\"><div class=\"fusion-gallery-image\"><a href=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-vite-testa-esagonale-5739-geomet-10.jpg\" rel=\"noreferrer\" data-rel=\"iLightbox[gallery_image_1]\" class=\"fusion-lightbox\" target=\"_self\"><img decoding=\"async\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-vite-testa-esagonale-5739-geomet-10.jpg\" width=\"800\" height=\"600\" alt=\"\" title=\"efs-vite-testa-esagonale-5739-geomet-10\" aria-label=\"efs-vite-testa-esagonale-5739-geomet-10\" class=\"img-responsive wp-image-2540\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-vite-testa-esagonale-5739-geomet-10-200x150.jpg 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-vite-testa-esagonale-5739-geomet-10-400x300.jpg 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-vite-testa-esagonale-5739-geomet-10-600x450.jpg 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2026\/06\/efs-vite-testa-esagonale-5739-geomet-10.jpg 800w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 712px) 598px, (min-width: 640px) 712px, \" \/><\/a><\/div><\/div><div class=\"clearfix\"><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-text-color:var(--awb-color4);\"><h2 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:26;line-height:1.5;\">Characteristics of Industrial Hex Head Screws<\/h2><\/div><div class=\"fusion-text fusion-text-3\"><p>Industrial hex head screws are manufactured according to ISO, DIN and UNI standards, with partial-thread or full-thread configurations depending on the required mechanical and structural application.<\/p>\n<p>The main reference standards are:<\/p>\n<\/div><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color5);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">Partial-Thread Hex Head Screws<\/h3><\/div><div class=\"fusion-text fusion-text-4\"><ul>\n<li>ISO 4014<\/li>\n<li>DIN 931<\/li>\n<li>UNI 5737<\/li>\n<\/ul>\n<p>These screws are frequently used in structural connections and fastenings subject to high loads, because the plain shank improves stress distribution in the most highly stressed areas.<\/p>\n<p>Imperial equivalent:<\/p>\n<ul>\n<li>ASME B18.2.1 Hex Cap Screw<\/li>\n<\/ul>\n<\/div><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color5);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">Full-Thread Hex Head Screws<\/h3><\/div><div class=\"fusion-text fusion-text-5\"><ul>\n<li>ISO 4017<\/li>\n<li>DIN 933<\/li>\n<li>UNI 5739<\/li>\n<\/ul>\n<p>Full-thread versions are used when tightening must be developed along the entire useful length of the screw, or in applications involving reduced thicknesses.<\/p>\n<p>Inch equivalent:<\/p>\n<ul>\n<li>ASME B18.2.1 Fully Threaded Hex Cap Screw<\/li>\n<\/ul>\n<p>In the industrial sector, inch-size equivalents according to ASTM and ASME standards are also widely used, especially in Oil &amp; Gas, energy plant engineering and offshore applications. In these contexts, UNC and UNF fasteners are used in materials such as ASTM A193 B7, B16, L7 and stainless steel B8\/B8M.<br \/>\nThe most commonly used property classes for industrial hex head fasteners are 8.8, 10.9 and 12.9 according to ISO 898-1. In the machinery, power transmission, heavy steel construction and heavy-duty automotive sectors, they are frequently combined with heat treatments, dimensional inspections and special machining operations.<br \/>\nIn addition to standard dimensions, EFS manages special made-to-drawing production with non-standard lengths, fine threads, oversized diameters, laser markings and dedicated machining for offshore applications, cement plants, energy plants and structures subject to strong vibration.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-4 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:80px;--awb-padding-bottom:80px;--awb-background-image:linear-gradient(180deg, var(--awb-color4) 0%,var(--awb-color5) 100%);--awb-flex-wrap:wrap;\" ><div class=\"awb-background-mask\" style=\"background-image:  url(https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/EFS_mask_1w.svg);opacity: 0.5 ;transform: scale(-1, 1);mix-blend-mode:normal;\"><\/div><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-center fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-6 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-margin-bottom-medium:20px;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-5 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-bottom:20px;--awb-margin-bottom-small:0px;--awb-font-size:40px;\"><h3 class=\"fusion-title-heading title-heading-left md-text-align-center sm-text-align-center fusion-responsive-typography-calculated\" style=\"margin:0;font-size:1em;--fontSize:40;line-height:1.5;\">NEED A PARTNER FOR SPECIAL BOLTS?<\/h3><\/div><div class=\"fusion-text fusion-text-6\" style=\"--awb-text-color:var(--awb-color1);\"><p data-start=\"2917\" data-end=\"3084\">We supply custom-designed fasteners for critical applications \u2014 with certified quality, full traceability, and technical support.<br data-start=\"517\" data-end=\"520\" \/>Fill out the contact form or call us: our team is ready to assist you with tailored solutions.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-7 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-margin-top-large:0px;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:5.76%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"md-text-align-center sm-text-align-center\"><a class=\"fusion-button button-flat button-xlarge button-custom fusion-button-default button-1 fusion-button-default-span fusion-button-default-type\" style=\"--button_accent_color:var(--awb-color1);--button_accent_hover_color:var(--awb-color1);--button_border_hover_color:var(--awb-color6);--button_border_width-top:4px;--button_border_width-right:4px;--button_border_width-bottom:4px;--button_border_width-left:4px;--button_gradient_top_color:rgba(127,135,144,0);--button_gradient_bottom_color:rgba(127,135,144,0);--button_gradient_top_color_hover:var(--awb-color6);--button_gradient_bottom_color_hover:var(--awb-color6);\" target=\"_self\" href=\"https:\/\/www.efsfasteners.com\/en\/contacts\/\"><span class=\"fusion-button-text\">CONTACT US<\/span><\/a><\/div><\/div><\/div><\/div><\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-5 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:60px;--awb-padding-bottom:60px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-8 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-6 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-text-color:var(--awb-color4);\"><h2 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:26;line-height:1.5;\">Industrial Applications of Hex Head Screws<\/h2><\/div><div class=\"fusion-text fusion-text-7\"><p>Industrial hex head screws are used in many sectors characterized by high mechanical stress and severe operating environments.<\/p>\n<p>In the Oil &amp; Gas sector, they are used for high-pressure valves, flanges, heat exchangers and offshore structures, where materials such as ASTM B7, B16, Duplex, Super Duplex and Inconel are essential.<\/p>\n<p>In machinery and machine tools, industrial hex head screws are used in gearboxes, presses, transmission assemblies and automated lines, applications where dimensional accuracy, tightening stability and fatigue resistance are essential requirements.<\/p>\n<p>Railway infrastructure and steel construction frequently use hot-dip <a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/hot-dip-galvanized-railway-fasteners\/\">galvanized hex head screws<\/a> for pylons, canopies, walkways and structures exposed to weathering. In these cases, anti-corrosion protection plays a decisive role in the durability of the connection.<\/p>\n<p>Special made-to-drawing screws are also used in the crane, offshore and cement plant sectors, where they may undergo surface treatments, impact testing and specific dimensional inspections to ensure reliability under vibration, abrasion and continuous cyclic loads.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-9 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-7 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color4);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">Available Materials<\/h3><\/div><div class=\"fusion-text fusion-text-8\"><p>Hex head screws can be manufactured in carbon steels, alloy steels, stainless steels and special alloys, depending on the application.<\/p>\n<p>The most commonly used materials and property classes include:<\/p>\n<ul>\n<li>property <strong>classes 8.8, 10.9 and 12.9<\/strong>, for mechanical and structural applications;<\/li>\n<li><strong>42CrMo4, 39NiCrMo3, 34CrNiMo6, 30CrNiMo8<\/strong>, for high-strength fasteners;<\/li>\n<li><strong>A2, A4, AISI 304, 316, 316L<\/strong>, for moderately corrosive environments;<\/li>\n<li><strong>Duplex and Super Duplex<\/strong>, for offshore, Oil &amp; Gas, valves and chloride-rich environments;<\/li>\n<li><strong>ASTM A193 B7, B7M, L7, B16<\/strong>, for energy plants, high-temperature and pressure applications;<\/li>\n<li><strong>Inconel, Hastelloy, Monel, Incoloy<\/strong>, for extreme conditions, aggressive fluids or high temperatures.<\/li>\n<\/ul>\n<p>EFS manages supplies in alloy steels, stainless steels, Duplex, Super Duplex, ASTM grades and nickel-based alloys such as Inconel, Hastelloy and Monel.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-10 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-8 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color4);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">Possible Surface Treatments<\/h3><\/div><div class=\"fusion-text fusion-text-9\"><p>The surface treatment is selected according to the operating environment, mechanical property class and assembly requirements. For hex head screws, the following options may be considered:<\/p>\n<ul>\n<li><strong>electrolytic zinc plating<\/strong>, for corrosion protection in non-extreme industrial environments;<\/li>\n<li><strong>hot-dip galvanizing<\/strong>, suitable for steel structures, infrastructure and outdoor applications;<\/li>\n<li><strong>Geomet\u00ae \/ zinc-flake<\/strong>, particularly suitable for high-strength screws and severe environments;<\/li>\n<li><strong>zinc-nickel coating<\/strong>, for applications requiring high corrosion resistance;<\/li>\n<li><strong>black oxide treatment<\/strong>, for light protection and dimensional control;<\/li>\n<li><strong>phosphating<\/strong>, useful in lubricated environments and mechanical applications;<\/li>\n<li><strong>Xylan\u00ae<\/strong>, when protection, friction reduction or specific process requirements are needed;<\/li>\n<li><strong>electroless nickel plating<\/strong>, for complex geometries and uniform coating thicknesses.<\/li>\n<\/ul>\n<p>EFS manages treatments such as electrolytic zinc plating, hot-dip galvanizing, black oxide treatment, phosphating, Xylan\u00ae, Geomet\u00ae, electroless nickel plating and thread-locking inserts.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-11 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-9 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-text-color:var(--awb-color4);\"><h2 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:26;line-height:1.5;\">EFS Capabilities<\/h2><\/div><div class=\"fusion-text fusion-text-10\"><p>EFS supports the supply of standard, special and made-to-drawing hex head screws, coordinating qualified Italian and European manufacturers, certified materials, surface treatments, machining operations and quality controls.<br \/>\nThe company can manage components with non-standard diameters and lengths, special threads, dedicated markings, 3.1 or 3.2 certificates, dimensional inspections, mechanical testing and non-destructive testing. This approach makes it possible to supply not only the component itself, but a technical solution consistent with the final application.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-12 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-10 fusion-sep-none fusion-title-text fusion-title-size-two\" style=\"--awb-text-color:var(--awb-color4);\"><h2 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:26;line-height:1.5;\">FAQ<\/h2><\/div><div class=\"fusion-title title fusion-title-11 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color5);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">What Is the Difference Between DIN 931 and ISO 4014?<\/h3><\/div><div class=\"fusion-text fusion-text-11\"><p>DIN 931 is the historical German standard for partial-thread hex head screws, while ISO 4014 represents the international evolution of the same type of fastener.<\/p>\n<\/div><div class=\"fusion-title title fusion-title-12 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color5);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">When Should a Partial-Thread Screw Be Used?<\/h3><\/div><div class=\"fusion-text fusion-text-12\"><p>Partial-thread screws are used in structural connections where it is necessary to keep the plain shank in the shear zone or in the area subject to the highest stress.<\/p>\n<\/div><div class=\"fusion-title title fusion-title-13 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color5);\"><h3 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:22;--minFontSize:22;line-height:1.5;\">Which Materials Should Be Selected for Corrosive Environments?<\/h3><\/div><div class=\"fusion-text fusion-text-13\"><p>In marine or chemically aggressive environments, AISI 316 stainless steel, Duplex, Super Duplex and special alloys such as Inconel or Hastelloy are frequently used. However, fastener protection also depends on the surface treatment: hot-dip galvanizing, HDG, Geomet\u00ae, Xylan\u00ae and zinc-nickel coating are selected according to the level of corrosion, the required tolerances and the operating conditions of the plant.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-6 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:80px;--awb-padding-bottom:80px;--awb-background-image:linear-gradient(180deg, var(--awb-color4) 0%,var(--awb-color5) 100%);--awb-flex-wrap:wrap;\" ><div class=\"awb-background-mask\" style=\"background-image:  url(https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/EFS_mask_1w.svg);opacity: 0.5 ;transform: scale(-1, 1);mix-blend-mode:normal;\"><\/div><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-center fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-13 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-margin-bottom-medium:20px;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-14 fusion-sep-none fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color1);--awb-margin-bottom:20px;--awb-margin-bottom-small:0px;--awb-font-size:40px;\"><h3 class=\"fusion-title-heading title-heading-left md-text-align-center sm-text-align-center fusion-responsive-typography-calculated\" style=\"margin:0;font-size:1em;--fontSize:40;line-height:1.5;\">NEED A PARTNER FOR SPECIAL BOLTS?<\/h3><\/div><div class=\"fusion-text fusion-text-14\" style=\"--awb-text-color:var(--awb-color1);\"><p data-start=\"2917\" data-end=\"3084\">We supply custom-designed fasteners for critical applications \u2014 with certified quality, full traceability, and technical support.<br data-start=\"517\" data-end=\"520\" \/>Fill out the contact form or call us: our team is ready to assist you with tailored solutions.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-14 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-margin-top-large:0px;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:5.76%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"md-text-align-center sm-text-align-center\"><a class=\"fusion-button button-flat button-xlarge button-custom fusion-button-default button-2 fusion-button-default-span fusion-button-default-type\" style=\"--button_accent_color:var(--awb-color1);--button_accent_hover_color:var(--awb-color1);--button_border_hover_color:var(--awb-color6);--button_border_width-top:4px;--button_border_width-right:4px;--button_border_width-bottom:4px;--button_border_width-left:4px;--button_gradient_top_color:rgba(127,135,144,0);--button_gradient_bottom_color:rgba(127,135,144,0);--button_gradient_top_color_hover:var(--awb-color6);--button_gradient_bottom_color_hover:var(--awb-color6);\" target=\"_self\" href=\"https:\/\/www.efsfasteners.com\/en\/contacts\/\"><span class=\"fusion-button-text\">CONTACT US<\/span><\/a><\/div><\/div><\/div><\/div><\/div>\n<div id=\"headerpaginaprove\" class=\"fusion-container-anchor\"><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-7 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:60px;--awb-padding-bottom:60px;--awb-background-color:var(--awb-color2);--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-15 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-15 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-three\" style=\"--awb-text-color:var(--awb-color4);\"><h3 class=\"fusion-title-heading title-heading-center fusion-responsive-typography-calculated\" style=\"margin:0;text-transform:uppercase;--fontSize:22;--minFontSize:22;line-height:1.5;\">PRODUCTS APPLIED TO INDUSTRY<\/h3><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-16 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-recent-works fusion-portfolio-element fusion-portfolio fusion-portfolio-1 fusion-portfolio-carousel fusion-portfolio-paging-pagination recent-works-carousel portfolio-carousel picture-size-auto fusion-portfolio-rollover\" data-id=\"-rw-1\"><div class=\"awb-carousel awb-swiper awb-swiper-carousel fusion-carousel-title-below-image\" style=\"--awb-columns:4;\" data-metacontent=\"yes\" data-autoplay=\"no\" data-columns=\"4\" data-itemmargin=\"10\" data-itemwidth=\"180\" data-touchscroll=\"no\" data-imagesize=\"auto\" data-scrollitems=\"1\"><div class=\"swiper-wrapper\"><div class=\"swiper-slide\"><div class=\"fusion-carousel-item-wrapper\"><span class=\"entry-title rich-snippet-hidden\">Special Screws for Lamellar Joints<\/span><span class=\"vcard rich-snippet-hidden\"><span class=\"fn\"><a href=\"https:\/\/www.efsfasteners.com\/en\/author\/eufastersol-admin\/\" rel=\"author\">Eufastersol Admin<\/a><\/span><\/span><div  class=\"fusion-image-wrapper\" aria-haspopup=\"true\">\n\t\t\t\t<img decoding=\"async\" width=\"1422\" height=\"800\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1.png\" class=\"attachment-full size-full wp-post-image\" alt=\"EFS - Prodotti - Viti speciali per giunti lamellari 42CrMo4\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1-200x113.png 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1-400x225.png 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1-600x338.png 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1-800x450.png 800w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1-1200x675.png 1200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/03\/20250220_1.png 1422w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 856px) 293px, (min-width: 784px) 390px, (min-width: 712px) 585px, (min-width: 640px) 712px, \" \/><div class=\"fusion-rollover\">\n\t<div class=\"fusion-rollover-content\">\n\n\t\t\t\t\n\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<div class=\"fusion-rollover-categories\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/mechanics\/\" rel=\"tag\">MECHANICS<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<a class=\"fusion-link-wrapper\" href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/special-screws-for-lamellar-joints\/\" aria-label=\"Special Screws for Lamellar Joints\"><\/a>\n\t<\/div>\n<\/div>\n<\/div>\n<h4 class=\"fusion-carousel-title\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/special-screws-for-lamellar-joints\/\" target=\"_self\">Special Screws for Lamellar Joints<\/a><\/h4><div class=\"fusion-carousel-meta\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/mechanics\/\" rel=\"tag\">MECHANICS<\/a><\/div><\/div><\/div><div class=\"swiper-slide\"><div class=\"fusion-carousel-item-wrapper\"><span class=\"entry-title rich-snippet-hidden\">Custom Threaded Studs for Nuclear Plants<\/span><span class=\"vcard rich-snippet-hidden\"><span class=\"fn\"><a href=\"https:\/\/www.efsfasteners.com\/en\/author\/eufastersol-admin\/\" rel=\"author\">Eufastersol Admin<\/a><\/span><\/span><div  class=\"fusion-image-wrapper\" aria-haspopup=\"true\">\n\t\t\t\t<img decoding=\"async\" width=\"1422\" height=\"800\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1.png\" class=\"attachment-full size-full wp-post-image\" alt=\"EFS - Prodotti - Prigionieri speciali per impianti nucleari 21CrMoV5-7, 24CrMo5\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1-200x113.png 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1-400x225.png 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1-600x338.png 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1-800x450.png 800w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1-1200x675.png 1200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250206_1.png 1422w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 856px) 293px, (min-width: 784px) 390px, (min-width: 712px) 585px, (min-width: 640px) 712px, \" \/><div class=\"fusion-rollover\">\n\t<div class=\"fusion-rollover-content\">\n\n\t\t\t\t\n\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<div class=\"fusion-rollover-categories\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/energy\/\" rel=\"tag\">ENERGY<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<a class=\"fusion-link-wrapper\" href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/special-prisoners-for-nuclear-plants\/\" aria-label=\"Custom Threaded Studs for Nuclear Plants\"><\/a>\n\t<\/div>\n<\/div>\n<\/div>\n<h4 class=\"fusion-carousel-title\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/special-prisoners-for-nuclear-plants\/\" target=\"_self\">Custom Threaded Studs for Nuclear Plants<\/a><\/h4><div class=\"fusion-carousel-meta\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/energy\/\" rel=\"tag\">ENERGY<\/a><\/div><\/div><\/div><div class=\"swiper-slide\"><div class=\"fusion-carousel-item-wrapper\"><span class=\"entry-title rich-snippet-hidden\">Hexagonal Nut for Oil&amp;Gas Industry<\/span><span class=\"vcard rich-snippet-hidden\"><span class=\"fn\"><a href=\"https:\/\/www.efsfasteners.com\/en\/author\/eufastersol-admin\/\" rel=\"author\">Eufastersol Admin<\/a><\/span><\/span><div  class=\"fusion-image-wrapper\" aria-haspopup=\"true\">\n\t\t\t\t<img decoding=\"async\" width=\"1422\" height=\"800\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1.png\" class=\"attachment-full size-full wp-post-image\" alt=\"EFS - Prodotti - Dado esagonale per il settore Oil&amp;Gas\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1-200x113.png 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1-400x225.png 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1-600x338.png 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1-800x450.png 800w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1-1200x675.png 1200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250121_1.png 1422w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 856px) 293px, (min-width: 784px) 390px, (min-width: 712px) 585px, (min-width: 640px) 712px, \" \/><div class=\"fusion-rollover\">\n\t<div class=\"fusion-rollover-content\">\n\n\t\t\t\t\n\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<div class=\"fusion-rollover-categories\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/oil-gas\/\" rel=\"tag\">OIL &amp; GAS<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<a class=\"fusion-link-wrapper\" href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/hexagonal-nut-for-oilgas-industry\/\" aria-label=\"Hexagonal Nut for Oil&amp;Gas Industry\"><\/a>\n\t<\/div>\n<\/div>\n<\/div>\n<h4 class=\"fusion-carousel-title\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/hexagonal-nut-for-oilgas-industry\/\" target=\"_self\">Hexagonal Nut for Oil&amp;Gas Industry<\/a><\/h4><div class=\"fusion-carousel-meta\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/oil-gas\/\" rel=\"tag\">OIL &amp; GAS<\/a><\/div><\/div><\/div><div class=\"swiper-slide\"><div class=\"fusion-carousel-item-wrapper\"><span class=\"entry-title rich-snippet-hidden\">Specialty Hardware for the Port Crane Industry<\/span><span class=\"vcard rich-snippet-hidden\"><span class=\"fn\"><a href=\"https:\/\/www.efsfasteners.com\/en\/author\/eufastersol-admin\/\" rel=\"author\">Eufastersol Admin<\/a><\/span><\/span><div  class=\"fusion-image-wrapper\" aria-haspopup=\"true\">\n\t\t\t\t<img decoding=\"async\" width=\"1422\" height=\"800\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1.png\" class=\"attachment-full size-full wp-post-image\" alt=\"EFS - Prodotti - Bulloneria speciale per il settore delle gru portuali\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1-200x113.png 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1-400x225.png 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1-600x338.png 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1-800x450.png 800w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1-1200x675.png 1200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/04\/20250115_1.png 1422w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 856px) 293px, (min-width: 784px) 390px, (min-width: 712px) 585px, (min-width: 640px) 712px, \" \/><div class=\"fusion-rollover\">\n\t<div class=\"fusion-rollover-content\">\n\n\t\t\t\t\n\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<div class=\"fusion-rollover-categories\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/construction-sites-and-lifting\/\" rel=\"tag\">CONSTRUCTION SITES AND LIFTING<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<a class=\"fusion-link-wrapper\" href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/specialty-hardware-for-the-port-crane-industry\/\" aria-label=\"Specialty Hardware for the Port Crane Industry\"><\/a>\n\t<\/div>\n<\/div>\n<\/div>\n<h4 class=\"fusion-carousel-title\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/specialty-hardware-for-the-port-crane-industry\/\" target=\"_self\">Specialty Hardware for the Port Crane Industry<\/a><\/h4><div class=\"fusion-carousel-meta\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/construction-sites-and-lifting\/\" rel=\"tag\">CONSTRUCTION SITES AND LIFTING<\/a><\/div><\/div><\/div><div class=\"swiper-slide\"><div class=\"fusion-carousel-item-wrapper\"><span class=\"entry-title rich-snippet-hidden\">Rectangular head screws for industrial plants: a compact and effective solution<\/span><span class=\"vcard rich-snippet-hidden\"><span class=\"fn\"><a href=\"https:\/\/www.efsfasteners.com\/en\/author\/eufastersol-admin\/\" rel=\"author\">Eufastersol Admin<\/a><\/span><\/span><div  class=\"fusion-image-wrapper\" aria-haspopup=\"true\">\n\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250508_viti-testa-rettangolare_4.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"EFS - Prodotti - Viti a testa rettangolare per impianti industriali\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250508_viti-testa-rettangolare_4-200x150.jpg 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250508_viti-testa-rettangolare_4-400x300.jpg 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250508_viti-testa-rettangolare_4-600x450.jpg 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250508_viti-testa-rettangolare_4.jpg 800w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 856px) 293px, (min-width: 784px) 390px, (min-width: 712px) 585px, (min-width: 640px) 712px, \" \/><div class=\"fusion-rollover\">\n\t<div class=\"fusion-rollover-content\">\n\n\t\t\t\t\n\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<div class=\"fusion-rollover-categories\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/plants\/\" rel=\"tag\">PLANTS<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<a class=\"fusion-link-wrapper\" href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/rectangular-head-screws-for-industrial-plants-a-compact-and-effective-solution\/\" aria-label=\"Rectangular head screws for industrial plants: a compact and effective solution\"><\/a>\n\t<\/div>\n<\/div>\n<\/div>\n<h4 class=\"fusion-carousel-title\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/rectangular-head-screws-for-industrial-plants-a-compact-and-effective-solution\/\" target=\"_self\">Rectangular head screws for industrial plants: a compact and effective solution<\/a><\/h4><div class=\"fusion-carousel-meta\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/plants\/\" rel=\"tag\">PLANTS<\/a><\/div><\/div><\/div><div class=\"swiper-slide\"><div class=\"fusion-carousel-item-wrapper\"><span class=\"entry-title rich-snippet-hidden\">Lightened shank screws for rail transport<\/span><span class=\"vcard rich-snippet-hidden\"><span class=\"fn\"><a href=\"https:\/\/www.efsfasteners.com\/en\/author\/eufastersol-admin\/\" rel=\"author\">Eufastersol Admin<\/a><\/span><\/span><div  class=\"fusion-image-wrapper\" aria-haspopup=\"true\">\n\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250509_viti-a-gambo-alleggerito_1b.jpg\" class=\"attachment-full size-full wp-post-image\" alt=\"EFS - Prodotti - Viti a gambo alleggerito per trasporti ferroviari 42CrMo4\" srcset=\"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250509_viti-a-gambo-alleggerito_1b-200x150.jpg 200w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250509_viti-a-gambo-alleggerito_1b-400x300.jpg 400w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250509_viti-a-gambo-alleggerito_1b-600x450.jpg 600w, https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/20250509_viti-a-gambo-alleggerito_1b.jpg 800w\" sizes=\"(min-width: 2200px) 100vw, (min-width: 856px) 293px, (min-width: 784px) 390px, (min-width: 712px) 585px, (min-width: 640px) 712px, \" \/><div class=\"fusion-rollover\">\n\t<div class=\"fusion-rollover-content\">\n\n\t\t\t\t\n\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<div class=\"fusion-rollover-categories\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/vehicles\/\" rel=\"tag\">VEHICLES<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<a class=\"fusion-link-wrapper\" href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/lightened-shank-screws-for-rail-transport\/\" aria-label=\"Lightened shank screws for rail transport\"><\/a>\n\t<\/div>\n<\/div>\n<\/div>\n<h4 class=\"fusion-carousel-title\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio-items\/lightened-shank-screws-for-rail-transport\/\" target=\"_self\">Lightened shank screws for rail transport<\/a><\/h4><div class=\"fusion-carousel-meta\"><a href=\"https:\/\/www.efsfasteners.com\/en\/portfolio_category\/vehicles\/\" rel=\"tag\">VEHICLES<\/a><\/div><\/div><\/div><\/div><div class=\"awb-swiper-button awb-swiper-button-prev\"><i class=\"awb-icon-angle-left\" aria-hidden=\"true\"><\/i><\/div><div class=\"awb-swiper-button awb-swiper-button-next\"><i class=\"awb-icon-angle-right\" aria-hidden=\"true\"><\/i><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-17 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div style=\"text-align:center;\"><a class=\"fusion-button button-flat fusion-button-default-size button-default fusion-button-default button-3 fusion-button-default-span fusion-button-default-type\" target=\"_self\" href=\"https:\/\/www.efsfasteners.com\/en\/areas-of-application\/\"><span class=\"fusion-button-text\">DISCOVER THE APPLICATION SECTORS<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div>\n<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":1175,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-2774","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Industrial ISO and DIN Hex Head Screws | EFS<\/title>\n<meta name=\"description\" content=\"Industrial ISO and DIN hex head screws in property classes 8.8, 10.9 and 12.9, with treatments, certifications and special materials.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Industrial ISO and DIN Hex Head Screws | EFS\" \/>\n<meta property=\"og:description\" content=\"Industrial ISO and DIN hex head screws in property classes 8.8, 10.9 and 12.9, with treatments, certifications and special materials.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/\" \/>\n<meta property=\"og:site_name\" content=\"EFS Srl European Fasteners Solutions\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/eufastenersol\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-17T13:56:31+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@eufastenersol\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/screws\\\/industrial-hex-head-screws\\\/\",\"url\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/screws\\\/industrial-hex-head-screws\\\/\",\"name\":\"Industrial ISO and DIN Hex Head Screws | EFS\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/#website\"},\"datePublished\":\"2026-06-05T12:34:59+00:00\",\"dateModified\":\"2026-07-17T13:56:31+00:00\",\"description\":\"Industrial ISO and DIN hex head screws in property classes 8.8, 10.9 and 12.9, with treatments, certifications and special materials.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/screws\\\/industrial-hex-head-screws\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/screws\\\/industrial-hex-head-screws\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/screws\\\/industrial-hex-head-screws\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\",\"item\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Screws\",\"item\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/products\\\/screws\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Industrial Hex Head Screws\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/\",\"name\":\"EFS Srl European Fasteners Solutions\",\"description\":\"Bulloni, viti, tiranti a Cant\u00f9\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/#organization\",\"name\":\"EFS Srl European Fasteners Solutions\",\"url\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.efsfasteners.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/Logo-EFS-80.svg\",\"contentUrl\":\"https:\\\/\\\/www.efsfasteners.com\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/Logo-EFS-80.svg\",\"width\":80,\"height\":60,\"caption\":\"EFS Srl European Fasteners Solutions\"},\"image\":{\"@id\":\"https:\\\/\\\/www.efsfasteners.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/eufastenersol\\\/\",\"https:\\\/\\\/x.com\\\/eufastenersol\",\"https:\\\/\\\/www.instagram.com\\\/eufastenersol\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/european-fasteners-solutions\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Industrial ISO and DIN Hex Head Screws | EFS","description":"Industrial ISO and DIN hex head screws in property classes 8.8, 10.9 and 12.9, with treatments, certifications and special materials.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/","og_locale":"en_US","og_type":"article","og_title":"Industrial ISO and DIN Hex Head Screws | EFS","og_description":"Industrial ISO and DIN hex head screws in property classes 8.8, 10.9 and 12.9, with treatments, certifications and special materials.","og_url":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/","og_site_name":"EFS Srl European Fasteners Solutions","article_publisher":"https:\/\/www.facebook.com\/eufastenersol\/","article_modified_time":"2026-07-17T13:56:31+00:00","twitter_card":"summary_large_image","twitter_site":"@eufastenersol","twitter_misc":{"Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/","url":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/","name":"Industrial ISO and DIN Hex Head Screws | EFS","isPartOf":{"@id":"https:\/\/www.efsfasteners.com\/en\/#website"},"datePublished":"2026-06-05T12:34:59+00:00","dateModified":"2026-07-17T13:56:31+00:00","description":"Industrial ISO and DIN hex head screws in property classes 8.8, 10.9 and 12.9, with treatments, certifications and special materials.","breadcrumb":{"@id":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/industrial-hex-head-screws\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.efsfasteners.com\/en\/"},{"@type":"ListItem","position":2,"name":"Products","item":"https:\/\/www.efsfasteners.com\/en\/products\/"},{"@type":"ListItem","position":3,"name":"Screws","item":"https:\/\/www.efsfasteners.com\/en\/products\/screws\/"},{"@type":"ListItem","position":4,"name":"Industrial Hex Head Screws"}]},{"@type":"WebSite","@id":"https:\/\/www.efsfasteners.com\/en\/#website","url":"https:\/\/www.efsfasteners.com\/en\/","name":"EFS Srl European Fasteners Solutions","description":"Bulloni, viti, tiranti a Cant\u00f9","publisher":{"@id":"https:\/\/www.efsfasteners.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.efsfasteners.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.efsfasteners.com\/en\/#organization","name":"EFS Srl European Fasteners Solutions","url":"https:\/\/www.efsfasteners.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.efsfasteners.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/Logo-EFS-80.svg","contentUrl":"https:\/\/www.efsfasteners.com\/wp-content\/uploads\/2025\/05\/Logo-EFS-80.svg","width":80,"height":60,"caption":"EFS Srl European Fasteners Solutions"},"image":{"@id":"https:\/\/www.efsfasteners.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/eufastenersol\/","https:\/\/x.com\/eufastenersol","https:\/\/www.instagram.com\/eufastenersol\/","https:\/\/www.linkedin.com\/company\/european-fasteners-solutions\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/pages\/2774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/comments?post=2774"}],"version-history":[{"count":5,"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/pages\/2774\/revisions"}],"predecessor-version":[{"id":2777,"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/pages\/2774\/revisions\/2777"}],"up":[{"embeddable":true,"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/pages\/1175"}],"wp:attachment":[{"href":"https:\/\/www.efsfasteners.com\/en\/wp-json\/wp\/v2\/media?parent=2774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}