{"product_id":"simpson-strong-tie-strong-drive-sds-heavy-duty-connector-screw-1-4-in-x-3-1-2-in-db-coating-125-pack-sds25312mb","title":"Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector Screw, 1\/4-in. x 3-1\/2-in. DB Coating, 125-Pack (SDS25312MB)","description":"\u003csection data-aplus\u003e\n  \u003cdetails id=\"product-features\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"features\"\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/tool-free-change.svg\" alt=\"tool-free-change\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eNo Predrilling Needed\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThe Type-17 point starts fast and drives cleanly into wood, which helps speed up installation and reduce splitting on connector and wood-to-wood jobs.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/compliance.svg\" alt=\"compliance\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eBuilt for Connectors\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThis Simpson Strong-Tie heavy-duty connector screw is made for Simpson Strong-Tie connectors and structural fastening where holding power and consistent installation matter.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"card\"\u003e\n          \u003cdiv class=\"card-inside\"\u003e\n            \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/material.svg\" alt=\"material\" class=\"aplusicon\"\u003e\n          \u003c\/div\u003e\n          \u003cdiv\u003e\u003cstrong\u003eCorrosion Resistance\u003c\/strong\u003e\u003c\/div\u003e\n          \u003cdiv class=\"feature-card\"\u003eThe double-barrier coating helps protect the screw in exterior wood applications, making it a practical pick for deck work and other exposed fastening jobs.\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-overview\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\" data-product-summary\u003e\n      \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie SDS25312MB Strong-Drive SDS Heavy-Duty Connector Screw\u003c\/strong\u003e is a 1\/4 in. x 3-1\/2 in. structural wood screw sold in a 125-count pack. This is a heavy-duty connector screw designed for fastening Simpson Strong-Tie connectors and for structural wood-to-wood applications where you want strong holding power without the extra step of predrilling. Model Number: \u003cstrong\u003eSDS25312MB\u003c\/strong\u003e.\u003c\/p\u003e\n      \u003cp\u003eWhat makes this screw matter on the job is how it goes in. The Type-17 point is there to start quickly and reduce splitting, so you can move faster in framing, deck work, and connector installation. The serrated threads help the screw pull and bite into the wood instead of just forcing its way through it, which gives you a tight connection with less fuss.\u003c\/p\u003e\n      \u003cp\u003eThis fastener uses a 3\/8 in. hex drive and a hex head with an integrated 0.500 in. washer. In practical terms, that means better driver engagement, less chance of cam-out, and better bearing surface under the head. That wider bearing area helps clamp hardware and wood securely, which is exactly what you want when working with heavy-duty connectors and structural assemblies.\u003c\/p\u003e\n      \u003cp\u003eThe 3-1\/2 in. overall length and 2-1\/4 in. thread length put this specific SDS25312MB in a useful middle ground for many connector and exterior wood fastening jobs. It is long enough for serious engagement in wood, but still sized for applications where you do not want to jump all the way to the longer 4-1\/2 in., 5 in., or 6 in. versions in the SDS line.\u003c\/p\u003e\n      \u003cp\u003eFor outdoor use, the double-barrier coating is one of the big reasons to choose this version. It is intended to improve corrosion resistance versus plain steel fasteners, which matters in deck framing, exterior projects, and other jobs where moisture is part of the deal. If you are matching the fastener to exterior connector work, that coating is not a throwaway spec. It is part of the reason the assembly lasts.\u003c\/p\u003e\n      \u003cp\u003eSimpson Strong-Tie also designed these for easy identification after installation. The head is stamped with the Simpson Strong-Tie identification mark and the fastener length, which helps when you are inspecting completed work or verifying that the right screw went into the right connector location.\u003c\/p\u003e\n      \u003cp\u003eInstallation is straightforward, but the recommended setup matters. Simpson Strong-Tie calls for a low-speed 1\/2 in. drill with a 3\/8 in. hex driver. That makes sense for a fastener in this size class because controlled speed and steady torque help the screw seat cleanly without burning up the driver or overdriving the connection.\u003c\/p\u003e\n      \u003cp\u003eWho is this for? Contractors, deck builders, remodelers, carpenters, and serious DIY users who need a structural wood screw for connector fastening and exterior wood work. If you are installing heavy-duty Simpson Strong-Tie connectors, or you want a stronger and faster alternative to old-school lag-style installation in many wood applications, this is the kind of fastener worth buying by the box instead of by the handful.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits-1\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eFast Starts Save Time\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/ssttoolbox.widen.net\/content\/hzlr7w8cxn\/jpeg\/F_SDS_InstPho_Pho_Inst_SDS-HeavyDutyConnectorScrew-Deck-wDrill_C0.jpeg?position=c\u0026amp;color=ffffffff\u0026amp;u=cjmyin\" alt=\"Simpson Strong-Tie SDS25312MB Strong-Drive SDS Heavy-Duty Connector Screw being driven into deck framing lumber with a drill during exterior wood fastening\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eThis screw is built to go in without the usual slowdown. For deck framing and other exterior wood fastening jobs, that means less time drilling pilot holes and more time actually moving the build forward.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003eType-17 point helps start the screw quickly without predrilling\u003c\/li\u003e\n            \u003cli\u003e1\/4 in. diameter structural wood screw for connector and wood-to-wood applications\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits-2\" class=\"acc flip\"\u003e\n    \u003csummary\u003e\u003ch2\u003eMade to Clamp Connectors Tight\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/ssttoolbox.widen.net\/content\/3nemrgjlhb\/jpeg\/C_CJTZ-SDS_InstPho_Pho_Inst_ConcealedJoistTie-HeavyDutyConnectorScrew_C0.jpeg?position=c\u0026amp;color=ffffffff\u0026amp;u=cjmyin\" alt=\"Simpson Strong-Tie SDS25312MB Strong-Drive SDS Heavy-Duty Connector Screw installed in a concealed joist tie on structural lumber\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eConnector screws only matter if they seat clean and hold hard. The hex head and integrated washer give this fastener the bearing surface and drive engagement needed for structural connector work.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e3\/8 in. hex drive helps reduce driver slip under load\u003c\/li\u003e\n            \u003cli\u003eHex head with integrated washer helps spread clamping force on the connector face\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits-3\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eClean Look, Serious Holding Power\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/ssttoolbox.widen.net\/content\/4sxxegvwap\/jpeg\/C_OHU-SDS_InstPho_Pho_Instld_OrnamentalJoistHanger_C0.jpeg?position=c\u0026amp;color=ffffffff\u0026amp;u=cjmyin\" alt=\"Simpson Strong-Tie SDS25312MB Strong-Drive SDS Heavy-Duty Connector Screw securing an ornamental joist hanger to wood framing\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eWhen you are working with exposed hardware and finished framing, a fastener that installs cleanly matters. These screws are designed for structural use, but they also leave a tidy, consistent finished connection.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003eSerrated threads help pull the fastener into the wood for a firm connection\u003c\/li\u003e\n            \u003cli\u003eHead stamping helps identify the installed fastener later\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-benefits-4\" class=\"acc flip\"\u003e\n    \u003csummary\u003e\u003ch2\u003eExterior Ready for Everyday Jobs\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"row\"\u003e\n        \u003cdiv class=\"img\"\u003e\n          \u003cimg src=\"https:\/\/ssttoolbox.widen.net\/content\/xu7colmagv\/jpeg\/F_SDS-HDG_InstPho_Pho_Instld_SDS-HeavyDutyConnectorScrew-HoseReel_C0.jpeg?position=c\u0026amp;color=ffffffff\u0026amp;u=cjmyin\" alt=\"Simpson Strong-Tie SDS heavy-duty connector screws used to mount an outdoor hose reel bracket to exterior wood siding\" class=\"tnblock-img\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"copy\"\u003e\n          \u003cp\u003eThe double-barrier coating makes this version a smart fit for outdoor wood projects where exposure is part of the job. It is a practical choice for exterior brackets, deck framing, and other hardware mounted to wood.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003eDouble-barrier coating for corrosion resistance\u003c\/li\u003e\n            \u003cli\u003eSuitable for exterior wood fastening and heavy-duty Simpson Strong-Tie connectors\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-whats-included\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tnincluded-wrapper\"\u003e\n        \u003cul\u003e\n          \u003cli\u003e(125) 1\/4 in. x 3-1\/2 in. Heavy-Duty Connector Screws\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"included-note\"\u003e\n        \u003cp\u003eDriver bit is not listed as included with this SDS25312MB package.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-key-specifications\" class=\"acc\" open\u003e\n    \u003csummary\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003ctable class=\"aplusspecs\"\u003e\n        \u003ctr\u003e\n          \u003cth\u003eLength\u003c\/th\u003e\n          \u003ctd\u003e3-1\/2 in.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eShank Diameter\u003c\/th\u003e\n          \u003ctd\u003e0.235 in.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eDrive Type\u003c\/th\u003e\n          \u003ctd\u003e3\/8 in. Hex\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eCoating \/ Material\u003c\/th\u003e\n          \u003ctd\u003eDouble-Barrier Coating\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eThread Type\u003c\/th\u003e\n          \u003ctd\u003eSerrated Threads\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003eThread Length\u003c\/th\u003e\n          \u003ctd\u003e2-1\/4 in.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003ePoint Type\u003c\/th\u003e\n          \u003ctd\u003eType-17 Point\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth\u003ePackaging Quantity\u003c\/th\u003e\n          \u003ctd\u003e125\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-compatibility\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"compat-list\"\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/drive-size.svg\" alt=\"drive-size\" class=\"icon-sm\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003eDriver Interface\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eUses a 3\/8 in. hex drive. Simpson Strong-Tie recommends installation with a 3\/8 in. hex driver.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/accessories-included.svg\" alt=\"accessories-included\" class=\"icon-sm\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003eReplacement Bit\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eReplacement driver bit: BITHEXR38-R1.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"compat-row\"\u003e\n          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/compliance.svg\" alt=\"compliance\" class=\"icon-sm\"\u003e\n          \u003cdiv\u003e\n            \u003cstrong\u003eConnector Use\u003c\/strong\u003e\n            \u003cdiv class=\"compat-detail\"\u003eDesigned for heavy-duty Simpson Strong-Tie connectors and structural wood applications.\u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-applications-uses\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eBuilt For\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tags\"\u003e\n        \u003cspan class=\"tag\"\u003eDeck Building\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eCarpentry\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eConstruction\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eRemodeling\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eExterior Wood Fastening\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eConnector Installation\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eWood-to-Wood Fastening\u003c\/span\u003e\n        \u003cspan class=\"tag\"\u003eDIY \/ Hobbyist\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-pro-tips\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003ePro Tip\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"tip-row\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/specs.svg\" alt=\"specs\" class=\"icon-lg\"\u003e\n        \u003cp class=\"tip-text\"\u003eUse a low-speed 1\/2 in. drill with a 3\/8 in. hex driver and keep the screw running straight to the wood grain. You will get cleaner seating at the connector and better control than trying to hammer it in too fast.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-warranty\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eWarranty \u0026amp; Support\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"warranty-row\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/warranty.svg\" alt=\"warranty\" class=\"icon-sm\"\u003e\n        \u003cdiv class=\"warranty-text\"\u003e\n          Warranty: 12 months.\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-tool-nut-take\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eTool Nut's Take\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cdiv class=\"eyebrow\"\u003eTool Nut's Take\u003c\/div\u003e\n      \u003ch3\u003eSimpson Strong-Tie SDS25312MB Strong-Drive SDS Heavy-Duty Connector Screw is the one you buy when you want structural bite without wasting time\u003c\/h3\u003e\n      \u003cp\u003eThis is a jobsite-friendly structural screw that cuts out extra steps, drives clean with a hex head, and makes a lot more sense than fighting with slower old-school fastening methods.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWho it's for:\u003c\/strong\u003e Carpenters, deck builders, remodelers, and serious DIY users installing connectors or doing exterior wood fastening.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhy it stands out:\u003c\/strong\u003e Type-17 point, serrated threads, integrated washer, and a corrosion-resistant double-barrier coating all work together to make installation faster and more reliable.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWorth knowing:\u003c\/strong\u003e This is a 125-pack of screws, not a kit with extra accessories, so make sure you have the right 3\/8 in. hex driver on hand before you start.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails id=\"product-faqs\" class=\"acc\"\u003e\n    \u003csummary\u003e\u003ch2\u003eCommon Questions\u003c\/h2\u003e\u003c\/summary\u003e\n    \u003cdiv class=\"acc-body\"\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eDoes this screw require predrilling?\u003c\/strong\u003e No. The Type-17 point is designed for easy driving without predrilling.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat drive does it use?\u003c\/strong\u003e It uses a 3\/8 in. hex drive.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat is this screw mainly used for?\u003c\/strong\u003e It is intended for heavy-duty Simpson Strong-Tie connectors and structural wood applications, including exterior wood fastening.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWhat comes in this package?\u003c\/strong\u003e This SDS25312MB package contains 125 screws.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e","brand":"Simpson Strong-Tie","offers":[{"title":"Default Title","offer_id":52999306805542,"sku":"SDS25312MB","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/SDS25312MB_00707392526902_Product_Photo_01_0d422a75-cdd9-4d43-a4fb-331d97431267.jpg?v=1779135461","url":"https:\/\/www.toolnut.com\/products\/simpson-strong-tie-strong-drive-sds-heavy-duty-connector-screw-1-4-in-x-3-1-2-in-db-coating-125-pack-sds25312mb","provider":"Tool Nut","version":"1.0","type":"link"}