{"product_id":"m12-a2-stainless-steel-hex-head-lag-bolts-din571","title":"M12 A2 Stainless Steel Hex Head Lag Bolts – DIN571 Wood Screw, Multiple Lengths \u0026 Quantities","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n  \u003ch2\u003eM12 A2 Stainless Steel Hex Head Lag Bolts — Corrosion-Resistant DIN571 Wood Fasteners\u003c\/h2\u003e\n  \u003cp\u003eWhen your outdoor deck, timber frame, or heavy woodworking project demands fasteners that won't rust, strip, or fail under load, these \u003cstrong\u003eM12 A2 stainless steel hex head lag bolts\u003c\/strong\u003e deliver the reliability you need. Built to the DIN571 standard, they combine a sharp wood-screw thread with a hex head that locks securely onto any wrench or socket — no cam-out, no slipping.\u003c\/p\u003e\n  \u003cp\u003eManufactured from \u003cstrong\u003e304 stainless steel (A2 grade)\u003c\/strong\u003e with a natural untreated finish, these lag bolts offer excellent corrosion resistance in rain, humidity, and outdoor environments. Available in lengths from \u003cstrong\u003e60 mm to 200 mm (approx. 2⅜\" to 7⅞\")\u003c\/strong\u003e and in packs of 1, 5, 10, or 20 — so you can order exactly what your project requires without overstocking.\u003c\/p\u003e\n  \u003cp\u003ePurpose-built for \u003cstrong\u003edeck construction, timber framing, garden structures, outdoor furniture assembly, and heavy wood joinery\u003c\/strong\u003e where long-term weather resistance and consistent metric dimensions are non-negotiable.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n  \u003cspan class=\"hdiy-compat-icon\"\u003e✅\u003c\/span\u003e\n  Compatible with softwoods and hardwoods; suitable for outdoor, humid, and damp environments. Works with standard 19 mm (¾\") metric hex wrenches and sockets. Conforms to DIN571 standard.\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch2\u003e✅ Key Features of These M12 A2 Stainless Lag Bolts\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eA2 (304) Stainless Steel:\u003c\/strong\u003e Excellent corrosion resistance for outdoor decks, garden structures, and humid workshops — outlasts zinc-coated alternatives in wet conditions.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eDIN571 Hex Head Design:\u003c\/strong\u003e Flat-underside hex head provides a secure wrench or socket grip and sits flush against wood surfaces for a clean, professional finish.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e🪵\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eSharp Wood-Screw Thread:\u003c\/strong\u003e Aggressive DIN571 thread bites deep into wood fibers, pulling boards together tightly with superior pull-out resistance.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eConsistent M12 Metric Dimensions:\u003c\/strong\u003e Precise thread sizing ensures compatibility with standard metric nuts, washers, and tools across all lengths.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eFlexible Pack Sizes (1 \/ 5 \/ 10 \/ 20 pcs):\u003c\/strong\u003e Order exactly what your project needs — from a single replacement bolt to a 20-pack for larger builds — without overstocking.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cspan class=\"hdiy-icon\"\u003e✨\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eNatural Untreated Finish:\u003c\/strong\u003e No coating to chip, peel, or delaminate over time — the raw stainless steel surface maintains its integrity and appearance throughout the product's life.\u003c\/span\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-usecases\"\u003e\n  \u003ch2\u003e🎯 Who Is This For?\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-usecase-item\"\u003e\n    \u003cspan\u003e🏗️\u003c\/span\u003e\n    \u003cstrong\u003eDeck \u0026amp; Outdoor Structure Builders\u003c\/strong\u003e\n    \u003cp\u003eA2 stainless steel resists rain, humidity, and treated lumber chemicals — ideal for deck ledger boards, pergolas, raised garden beds, and any outdoor timber connection that needs to last.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"hdiy-usecase-item\"\u003e\n    \u003cspan\u003e🪵\u003c\/span\u003e\n    \u003cstrong\u003eTimber Framers \u0026amp; Heavy Woodworkers\u003c\/strong\u003e\n    \u003cp\u003eThe DIN571 hex head and aggressive wood thread deliver the clamping force needed for post-to-beam connections, heavy joinery, and structural timber assemblies.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"hdiy-usecase-item\"\u003e\n    \u003cspan\u003e🪑\u003c\/span\u003e\n    \u003cstrong\u003eFurniture Makers \u0026amp; Restorers\u003c\/strong\u003e\n    \u003cp\u003ePrecise M12 metric dimensions and a clean stainless finish make these lag bolts a reliable choice for outdoor furniture assembly, bench repairs, and decorative wood joinery.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"hdiy-usecase-item\"\u003e\n    \u003cspan\u003e🔧\u003c\/span\u003e\n    \u003cstrong\u003eDIYers \u0026amp; Home Improvers\u003c\/strong\u003e\n    \u003cp\u003eFlexible pack sizes mean you can grab exactly the quantity you need — whether it's one bolt for a quick fix or a 20-pack for a weekend project — without paying for a bulk box you won't use.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e304 Stainless Steel (A2 Grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003ctd\u003eDIN571\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 180 mm, 200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eHex Head (Flat Underside)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eDrive Style\u003c\/th\u003e\n\u003ctd\u003eHexagon — wrench or socket (typically 19 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eWood Screw Thread (coarse, self-tapping)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural \/ Untreated Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003ePack Sizes Available\u003c\/th\u003e\n\u003ctd\u003e1, 5, 10, or 20 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eCompatible Wood Types\u003c\/th\u003e\n\u003ctd\u003eSoftwood, Hardwood, Outdoor Timber\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth\u003eRecommended Pilot Hole\u003c\/th\u003e\n\u003ctd\u003eNot required for softwood; approx. 10 mm for hardwood or near board ends\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to pre-drill holes for M12 lag bolts?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor softwoods, the sharp wood-screw tip can self-tap without pre-drilling. For hardwoods (oak, maple) or when working near board edges, a pilot hole of approximately 10 mm is recommended to prevent splitting and reduce driving torque.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre A2 stainless lag bolts truly rust-resistant for outdoor use?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. A2 (304) stainless steel provides excellent corrosion resistance for most outdoor environments including rain, humidity, and occasional direct moisture. For marine or saltwater environments, A4 (316) grade would be more appropriate — but for decks, fences, garden structures, and outdoor furniture, A2 is a reliable and cost-effective choice.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat wrench or socket size fits the M12 hex head?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA standard 19 mm metric hex wrench or socket typically fits the M12 hex head. A ratchet with a deep socket makes driving into wood significantly easier, especially in confined spaces. Avoid using pliers — they can slip and damage the head.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the DIN571 standard?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDIN571 is a German industrial standard that defines the dimensions, thread pitch, and geometry for hex head wood screws (lag bolts). It ensures consistent quality and compatibility with standard metric nuts, washers, and tools across manufacturers.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich length should I choose for my project?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA general rule is that the lag bolt should penetrate at least two-thirds of its length into the receiving member. For example, when fastening a 40 mm board to a timber, a 100–120 mm bolt gives you solid engagement. Always follow your local building codes and structural requirements for load-bearing connections.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan these be used with pressure-treated lumber?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. A2 stainless steel is compatible with modern ACQ and CA pressure-treated lumber. Unlike zinc-coated fasteners, stainless steel does not react with the preservative chemicals in treated wood, making it a more durable long-term choice for outdoor applications.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy choose stainless steel over galvanized lag bolts?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eStainless steel offers superior corrosion resistance with no coating to chip or peel over time. Galvanized bolts can corrode at cut edges or damaged coating areas, especially in contact with treated lumber. Stainless steel maintains its integrity throughout its service life without maintenance.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I choose the right pack size?\u003c\/summary\u003e\n    \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe 1-piece option is ideal for replacements or testing fit. The 5-pack suits small repairs and single connections. The 10-pack covers medium projects like a garden bench or small deck section. The 20-pack is best for larger builds where you need multiple fasteners of the same size.\u003c\/p\u003e\u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your thread length and quantity above, then add to cart.\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M12 x 60mm \/ 1 Pcs","offer_id":52249438814482,"sku":"SSZXYGB00872x1","price":12.1,"currency_code":"USD","in_stock":true},{"title":"M12 x 70mm \/ 1 Pcs","offer_id":52249438847250,"sku":"SSZXYGB00873x1","price":13.19,"currency_code":"USD","in_stock":true},{"title":"M12 x 80mm \/ 1 Pcs","offer_id":52249438880018,"sku":"SSZXYGB00874x1","price":14.39,"currency_code":"USD","in_stock":true},{"title":"M12 x 90mm \/ 1 Pcs","offer_id":52249438912786,"sku":"SSZXYGB00875x1","price":15.48,"currency_code":"USD","in_stock":true},{"title":"M12 x 100mm \/ 1 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