{"product_id":"grade-12-9-high-tensile-socket-cap-screws-allen-head-bolts-m8-m10-din912","title":"Grade 12.9 High Tensile Socket Cap Screws – Allen Head Bolts M8 \u0026 M10 | DIN912","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=yes\" name=\"viewport\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n \/* ========================\n Prefix: hd-129sc- (prevents theme conflicts)\n Encapsulated styles for Shopify product description\n ======================== *\/\n .hd-129sc-wrapper {\n width: 100%;\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n color: #1a1a1a;\n line-height: 1.5;\n background: transparent;\n }\n .hd-129sc-wrapper *,\n .hd-129sc-wrapper *::before,\n .hd-129sc-wrapper *::after {\n box-sizing: inherit;\n }\n .hd-129sc-container {\n max-width: 1400px;\n margin: 0 auto;\n padding: 1.5rem 1rem;\n background: #ffffff;\n }\n \/* Typography *\/\n .hd-129sc-title {\n font-size: 1.9rem;\n font-weight: 600;\n margin: 0 0 0.5rem 0;\n letter-spacing: -0.01em;\n line-height: 1.2;\n color: #0a0a0a;\n }\n .hd-129sc-brand {\n font-size: 1rem;\n color: #2c7da0;\n margin-bottom: 1rem;\n font-weight: 500;\n display: inline-block;\n background: #eef4fc;\n padding: 0.2rem 0.8rem;\n border-radius: 30px;\n }\n .hd-129sc-section-title {\n font-size: 1.6rem;\n font-weight: 600;\n margin: 1.8rem 0 1rem 0;\n padding-bottom: 0.5rem;\n border-bottom: 3px solid #2c7da0;\n display: inline-block;\n color: #0b3b4f;\n }\n .hd-129sc-description {\n font-size: 1rem;\n margin: 1rem 0 1.2rem;\n color: #2c2c2c;\n }\n \/* Features list - vertical layout (SEO friendly) *\/\n .hd-129sc-features-list {\n list-style: none;\n padding: 0;\n margin: 1.2rem 0 1.8rem;\n }\n .hd-129sc-features-list li {\n padding: 0.75rem 0 0.75rem 1.8rem;\n position: relative;\n font-size: 1rem;\n border-bottom: 1px solid #f0f0f0;\n }\n .hd-129sc-features-list li:last-child {\n border-bottom: none;\n }\n .hd-129sc-features-list li::before {\n content: \"✅\";\n position: absolute;\n left: 0;\n top: 0.75rem;\n font-size: 1rem;\n }\n \/* Table styles *\/\n .hd-129sc-table-wrapper {\n overflow-x: auto;\n margin: 1.5rem 0 1rem;\n border-radius: 16px;\n border: 1px solid #e2e8f0;\n background: #ffffff;\n }\n .hd-129sc-specs-table {\n width: 100%;\n border-collapse: collapse;\n font-size: 0.9rem;\n min-width: 500px;\n }\n .hd-129sc-specs-table th,\n .hd-129sc-specs-table td {\n padding: 0.9rem 0.8rem;\n text-align: left;\n border-bottom: 1px solid #e9ecef;\n }\n .hd-129sc-specs-table th {\n background-color: #f1f9fe;\n font-weight: 700;\n color: #0b3b4f;\n font-size: 0.9rem;\n }\n .hd-129sc-specs-table tr:last-child td {\n border-bottom: none;\n }\n .hd-129sc-note {\n background: #f8fafc;\n padding: 0.8rem 1rem;\n border-radius: 12px;\n font-size: 0.85rem;\n color: #2c5a74;\n margin: 0.8rem 0 1rem;\n border-left: 4px solid #2c7da0;\n }\n \/* FAQ section - fully expanded, no accordion *\/\n .hd-129sc-faq-item {\n margin-bottom: 1.5rem;\n border-bottom: 1px solid #e9ecef;\n padding-bottom: 1.2rem;\n }\n .hd-129sc-faq-question {\n font-weight: 700;\n font-size: 1.05rem;\n margin: 0 0 0.5rem 0;\n color: #0f4c5f;\n display: flex;\n align-items: center;\n gap: 8px;\n }\n .hd-129sc-faq-question::before {\n content: \"🔧\";\n font-size: 1.1rem;\n }\n .hd-129sc-faq-answer {\n font-size: 0.95rem;\n color: #2d3e50;\n line-height: 1.5;\n margin-left: 1.2rem;\n }\n \/* Responsive *\/\n @media (max-width: 768px) {\n .hd-129sc-container {\n padding: 1rem 0.9rem;\n }\n .hd-129sc-title {\n font-size: 1.6rem;\n }\n .hd-129sc-section-title {\n font-size: 1.4rem;\n }\n .hd-129sc-specs-table th,\n .hd-129sc-specs-table td {\n padding: 0.7rem 0.5rem;\n font-size: 0.8rem;\n }\n }\n .hd-129sc-divider {\n height: 1px;\n background: #e9ecef;\n margin: 1.5rem 0;\n }\n .hd-129sc-text-small {\n font-size: 0.85rem;\n color: #5a6874;\n }\n \u003c\/style\u003e\n\u003cdiv class=\"hd-129sc-wrapper\"\u003e\n\u003cdiv class=\"hd-129sc-container\"\u003e\n\u003c!-- Product title (customer-facing) --\u003e\n\u003ch1 class=\"hd-129sc-title\"\u003e⚙️ Grade 12.9 High Tensile Socket Cap Screws – Allen Head Bolts M8 \u0026amp; M10 | DIN912\u003c\/h1\u003e\n\u003cdiv class=\"hd-129sc-brand\"\u003e🏷️ Brand: HomeDIYer Fastener | DIN912 | Grade 12.9 Alloy Steel | Uncoated | Hex Bits Included\u003c\/div\u003e\n\u003c!-- Product Overview: natural, problem-solving tone --\u003e\n\u003cdiv class=\"hd-129sc-description\"\u003e\n\u003cstrong\u003e📌 Overview — Extreme strength for the most demanding bolted joints.\u003c\/strong\u003e When standard fasteners fail under high load or vibration, upgrade to \u003cstrong\u003eGrade 12.9 High Tensile Steel Socket Cap Screws\u003c\/strong\u003e. With a tensile strength of 1220 MPa (177,000 psi), these DIN912 bolts are among the strongest metric fasteners available. The cylindrical head and hex socket drive allow high torque application without slipping, and the sleek profile fits perfectly into counterbored holes. Ideal for heavy machinery, hydraulic systems, racing components, industrial tooling, and structural applications where failure is not an option. Available in M8 and M10 diameters, fully threaded up to certain lengths, then partially threaded for longer sizes. Each order includes the correct hex screwdriver bits. Choose your length and quantity – engineered for professionals who demand the best.\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-description\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/KAY013_9.jpg?v=1776761008\" alt=\"\"\u003e\u003c\/div\u003e\n\u003c!-- Features: vertical list for SEO \u0026 readability --\u003e\n\u003ch2 class=\"hd-129sc-section-title\"\u003e✨ Key Features of Grade 12.9 Socket Cap Screws\u003c\/h2\u003e\n\u003cul class=\"hd-129sc-features-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade 12.9 High Tensile Alloy Steel\u003c\/strong\u003e – 1220 MPa tensile strength, 1100 MPa yield strength – the highest metric property class for steel fasteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHexagon Socket Drive (Allen Key)\u003c\/strong\u003e – Enables high torque transmission without cam-out; bits included with your order (6mm for M8, 8mm for M10).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN912 Standard\u003c\/strong\u003e – Precision dimensions for reliable fit in counterbored holes and with standard metric nuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylindrical Head Profile\u003c\/strong\u003e – Clean, low-profile appearance; ideal for machine assembly and recessed installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully threaded up to 35mm (M8) \/ 40mm (M10)\u003c\/strong\u003e – Longer lengths are partially threaded with a plain shank under the head (standard DIN912 practice).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric Coarse Threads M8 \u0026amp; M10\u003c\/strong\u003e – Most common pitches (1.25mm for M8, 1.5mm for M10).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUncoated Black Finish (Self-Color)\u003c\/strong\u003e – Natural steel with light oil for storage; suitable for dry or oil-lubricated environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/KAY013_7.jpg?v=1776761008\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c!-- Specifications Table: detailed dimensions --\u003e\n\u003ch2 class=\"hd-129sc-section-title\"\u003e📏 Technical Specifications – Grade 12.9 Socket Cap Screws (DIN912)\u003c\/h2\u003e\n\u003cdiv class=\"hd-129sc-table-wrapper\"\u003e\n\u003ctable class=\"hd-129sc-specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003cth\u003eThread Pitch (mm)\u003c\/th\u003e\n\u003cth\u003eHead Diameter (mm)\u003c\/th\u003e\n\u003cth\u003eHead Height (mm)\u003c\/th\u003e\n\u003cth\u003eAllen Key Size (mm)\u003c\/th\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25\u003c\/td\u003e\n\u003ctd\u003e13.0\u003c\/td\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003ctd\u003e6.0\u003c\/td\u003e\n\u003ctd\u003eFully threaded ≤35mm; partially threaded \u0026gt;35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e16.0\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003ctd\u003eFully threaded ≤40mm; partially threaded \u0026gt;40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-note\"\u003e💡 \u003cstrong\u003eLength \u0026amp; ordering info:\u003c\/strong\u003e Screw length is measured from the underside of the head. For M8: lengths up to 35mm are fully threaded; longer sizes have a plain shank. For M10: up to 40mm fully threaded; longer = partial thread. \u003cstrong\u003eChoose your preferred length\u003c\/strong\u003e (e.g., 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm) — sold as per your requirement. \u003cstrong\u003eHex bits are included\u003c\/strong\u003e with your order.\u003c\/div\u003e\n\u003c!-- Additional note on material and corrosion --\u003e\n\u003cdiv class=\"hd-129sc-note\" style=\"background: #fef9e6; border-left-color: #e6a017;\"\u003e⚠️ \u003cstrong\u003eMaterial note:\u003c\/strong\u003e Grade 12.9 steel offers exceptional strength but is not corrosion-resistant. The uncoated black finish (self-color) has light oil to prevent rust during storage. For indoor, dry, or oil-lubricated applications (engines, machinery, tooling), these are ideal. For outdoor or wet environments, use stainless steel or apply a protective coating.\u003c\/div\u003e\n\u003c!-- FAQ section (expanded, no accordion) --\u003e\n\u003ch2 class=\"hd-129sc-section-title\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/KAY013_8.jpg?v=1776761008\" alt=\"\"\u003e❓ Frequently Asked Questions – Grade 12.9 Socket Cap Screws\u003c\/h2\u003e\n\u003cdiv class=\"hd-129sc-faq-item\"\u003e\n\u003cdiv class=\"hd-129sc-faq-question\"\u003eWhat does Grade 12.9 mean? How strong is it?\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-answer\"\u003e📊 Grade 12.9 is the highest metric property class for steel fasteners. Minimum tensile strength: 1220 MPa (177,000 psi), yield strength: 1100 MPa (160,000 psi). For comparison, Grade 8.8 is about 800 MPa, and A2-70 stainless is 700 MPa. These are the bolts to use when maximum strength is required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-item\"\u003e\n\u003cdiv class=\"hd-129sc-faq-question\"\u003eAre these screws fully threaded or partially threaded?\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-answer\"\u003e🔩 It depends on length. For M8: lengths ≤35mm are fully threaded; \u0026gt;35mm have a plain shank under the head (partial thread). For M10: ≤40mm fully threaded; \u0026gt;40mm partial thread. This is standard per DIN912. If you need fully threaded in longer lengths, please contact us for custom orders.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-item\"\u003e\n\u003cdiv class=\"hd-129sc-faq-question\"\u003eDo you include the hex bits? What sizes?\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-answer\"\u003e✅ Yes, the box includes the correct hex (Allen) bits: 6mm for M8 screws, 8mm for M10 screws. You'll have everything needed to install them right away.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-item\"\u003e\n\u003cdiv class=\"hd-129sc-faq-question\"\u003eWill these bolts rust? Are they suitable for outdoor use?\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-answer\"\u003e🌧️ Grade 12.9 steel is not stainless – it will rust if exposed to moisture. The uncoated black finish has light oil for storage, but for outdoor or wet environments, we recommend applying a rust-preventative coating (e.g., paint, zinc spray) or switching to A2\/A4 stainless steel socket cap screws. These are best for dry, indoor, or oil-wetted applications like machinery, engines, and tooling.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-item\"\u003e\n\u003cdiv class=\"hd-129sc-faq-question\"\u003eWhat lengths are available? Can I order custom lengths?\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-faq-answer\"\u003e📦 “As per Your Choice” – select the exact length you need. Common lengths: 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm. Custom lengths available for bulk orders – contact us with your requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"hd-129sc-text-small\" style=\"text-align: center; margin-top: 1rem;\"\u003e⚙️ \u003cstrong\u003eHomeDIYer Fastener\u003c\/strong\u003e — Extreme-strength fasteners for critical applications. Order your exact size, length, and quantity today.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M8 \/ 10mm(fully threaded) \/ 50","offer_id":52196971970834,"sku":"KAYFST013-4","price":7.85,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 12mm(fully threaded) \/ 50","offer_id":52196972003602,"sku":"KAYFST013-5","price":7.85,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 14mm(fully threaded) \/ 50","offer_id":52196972036370,"sku":"KAYFST013-6","price":9.54,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 16mm(fully threaded) \/ 40","offer_id":52196972069138,"sku":"KAYFST013-7","price":7.39,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 20mm(fully threaded) \/ 40","offer_id":52196972101906,"sku":"KAYFST013-8","price":7.76,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 25mm(fully threaded) \/ 30","offer_id":52196972134674,"sku":"KAYFST013-9","price":7.26,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 30mm(fully threaded) \/ 30","offer_id":52196972167442,"sku":"KAYFST013-10","price":7.6,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 35mm(fully threaded) \/ 25","offer_id":52196972200210,"sku":"KAYFST013-11","price":7.23,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 40mm(partial thread) \/ 25","offer_id":52196972232978,"sku":"KAYFST013-12","price":7.62,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 45mm(partial thread) \/ 20","offer_id":52196972265746,"sku":"KAYFST013-13","price":7.22,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 50mm(partial thread) \/ 20","offer_id":52196972298514,"sku":"KAYFST013-14","price":7.31,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 55mm(partial thread) \/ 20","offer_id":52196972331282,"sku":"KAYFST013-15","price":7.64,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 60mm(partial thread) \/ 15","offer_id":52196972364050,"sku":"KAYFST013-16","price":7.18,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 65mm(partial thread) \/ 15","offer_id":52196972396818,"sku":"KAYFST013-17","price":7.26,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 70mm(partial thread) \/ 20","offer_id":52196972429586,"sku":"KAYFST013-18","price":8.08,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 75mm(partial thread) \/ 15","offer_id":52196972462354,"sku":"KAYFST013-19","price":7.71,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 80mm(partial thread) \/ 15","offer_id":52196972495122,"sku":"KAYFST013-20","price":7.82,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 90mm(partial thread) \/ 15","offer_id":52196972527890,"sku":"KAYFST013-21","price":8.04,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 100mm(partial thread) \/ 10","offer_id":52196971872530,"sku":"KAYFST013-1","price":7.45,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 110mm(partial thread) \/ 15","offer_id":52196971905298,"sku":"KAYFST013-2","price":8.64,"currency_code":"USD","in_stock":true},{"title":"M8 \/ 120mm(partial thread) \/ 10","offer_id":52196971938066,"sku":"KAYFST013-3","price":7.75,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 20mm(fully threaded) \/ 25","offer_id":52196972560658,"sku":"KAYFST013-22","price":8.72,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 25mm(fully threaded) \/ 20","offer_id":52196972593426,"sku":"KAYFST013-23","price":8.28,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 30mm(fully threaded) \/ 20","offer_id":52196972626194,"sku":"KAYFST013-24","price":8.4,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 35mm(fully threaded) \/ 15","offer_id":52196972658962,"sku":"KAYFST013-25","price":7.84,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 40mm(fully threaded) \/ 15","offer_id":52196972691730,"sku":"KAYFST013-26","price":8.18,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 45mm(partial thread) \/ 15","offer_id":52196972724498,"sku":"KAYFST013-27","price":8.36,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 50mm(partial thread) \/ 15","offer_id":52196972757266,"sku":"KAYFST013-28","price":8.58,"currency_code":"USD","in_stock":true},{"title":"M10 \/ 60mm(partial thread) \/ 15","offer_id":52196972790034,"sku":"KAYFST013-29","price":8.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/013.jpg?v=1776761008","url":"https:\/\/homediyer.com\/products\/grade-12-9-high-tensile-socket-cap-screws-allen-head-bolts-m8-m10-din912","provider":"HomeDIYer","version":"1.0","type":"link"}