{"product_id":"simpson-strong-tie-strong-drive-sdws-timber-exterior-grade-screw-0-220-in-x-4-in-t40-tan-250-pack-sdws22400dbmb","title":"Simpson Strong-Tie Strong-Drive SDWS Timber Exterior Grade Screw, 0.220-in. x 4-in. T40, Tan, 250-Pack (SDWS22400DBMB)","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\u003eFast Starts\u003c\/strong\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-card\"\u003eThe SawTooth point starts quickly and usually skips the need for predrilling in wood. That means less setup and less strain on your drill when you are driving structural screws all day.\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\/torque.svg\" alt=\"torque\" class=\"aplusicon\"\u003e\n        \u003c\/div\u003e\n        \u003cdiv\u003e\u003cstrong\u003eStructural Hold\u003c\/strong\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-card\"\u003eThe bold thread design gives the Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws (Exterior Grade) the holding power needed for demanding wood-to-wood connections like ledgers, posts, and heavy framing details.\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 Exterior Use\u003c\/strong\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-card\"\u003eDouble-barrier coating provides corrosion resistance equivalent to hot-dip galvanization for certain exterior and preservative-treated wood applications. That matters when the fastener is going into outdoor builds that need to stay tight over time.\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\"\u003e\n  \u003csummary\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003c\/summary\u003e\n  \u003cdiv class=\"acc-body\" data-product-summary\u003e\n    \u003cp\u003eThe Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws (Exterior Grade) is a 4 inch structural wood screw for exterior wood-to-wood fastening. This is a structural wood screw designed for fastening wood members in outdoor and treated-lumber applications. Model Number: SDWS22400DBMB. With its 0.220 inch shank, washer head, and aggressive thread, this screw is built for contractors and serious DIY users who want a faster alternative to traditional lag screws or through-bolting in many structural wood connections.\u003c\/p\u003e\n    \u003cp\u003eWhat makes this screw matter on the job is how it cuts down installation time without giving up holding power. Simpson Strong-Tie uses a bold thread design for strong grip in wood, and the SawTooth point is there for one simple reason: faster starts with less effort. In most applications, that means no predrilling, which saves time on repetitive fastening and helps when you are working overhead, on ladders, or moving through a ledger or railing job where every extra step slows you down.\u003c\/p\u003e\n    \u003cp\u003eThe head and drive design are just as important as the thread. This screw uses a T40 6-lobe drive for more positive bit engagement, so the bit stays seated better under load and is less likely to cam out when you are driving into dense framing or engineered wood. The washer head spreads clamping force over a larger area than a standard screw head, which helps pull members tight and hold them there. Underhead nibs help the head sit flush with less splintering at the surface, so the finished connection looks cleaner and seats more consistently.\u003c\/p\u003e\n    \u003cp\u003eFor this specific version, Simpson Strong-Tie pairs the 4 inch length with a 2-3\/8 inch thread length and a 0.760 inch head diameter. That combination gives you a screw that is long enough for many common structural wood connections while still being manageable to drive with a standard drill or impact driver using the correct T40 bit. The head is also marked for size identification, which is a small detail but a useful one when you have different lengths open on the same jobsite.\u003c\/p\u003e\n    \u003cp\u003eThis screw is also meant for exterior conditions where corrosion resistance matters. The double-barrier coating is rated by Simpson Strong-Tie as providing corrosion resistance equivalent to hot-dip galvanization, making it suitable for certain exterior and preservative-treated wood applications as described in the evaluation report. If you are building outdoors, tying ledgers, assembling fencing, or working on pergolas, planter boxes, and similar exposed structures, that coating is not a throwaway spec. It is a big part of why this fastener belongs in those jobs.\u003c\/p\u003e\n    \u003cp\u003eApplication-wise, Simpson Strong-Tie positions the SDWS timber screw for structural wood-to-wood and engineered wood fastening, including ledgers and mass timber connections such as cross-laminated timber wall-to-wall, floor-to-floor, surface splines, and lap joints. That gives this fastener a broader use range than a basic exterior wood screw. It is not just for decking or trim. It is intended for structural fastening where holding strength and repeatable installation matter.\u003c\/p\u003e\n    \u003cp\u003eIf you are the buyer comparing this to a lag screw, here is the practical difference: this style of structural screw is usually quicker to install, easier to drive, and simpler to use in repetitive work. You still need to follow approved application guidance, but for the right wood-to-wood connection, it is a cleaner and faster way to get the job done. For fence rails, ledger details, heavy outdoor assemblies, and general exterior structural wood fastening, this 250-count pack makes sense for crews who want jobsite-ready quantity without stepping up to a bulk contractor bucket.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails id=\"product-benefits\" class=\"acc\"\u003e\n  \u003csummary\u003e\u003ch2\u003eDrive Structural Screws Faster\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:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/10497949303078_01a2edf64ead.jpg\" alt=\"Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws being driven into an outdoor wood fence rail and post connection with a drill in a backyard setting\" class=\"tnblock-img\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"copy\"\u003e\n        \u003cp\u003eThis screw is built to speed up exterior wood fastening without turning the job into a pilot-hole routine. On rails, posts, and similar assemblies, the point geometry helps the screw bite quickly so you can keep moving.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003eSawTooth point is designed for fast starts\u003c\/li\u003e\n          \u003cli\u003ePredrilling is eliminated in most 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\u003eHold Members 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:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/10497949303078_984d24091dbf.jpg\" alt=\"Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws fastening a ledger board to framing with a drill during structural wood-to-wood installation\" class=\"tnblock-img\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"copy\"\u003e\n        \u003cp\u003eThe large washer head is there to do real work, not just look different. It gives the screw more bearing area so it can pull wood members together firmly in structural wood-to-wood connections.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003eWasher head increases bearing surface\u003c\/li\u003e\n          \u003cli\u003eBold thread design provides superior holding power\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\u003eMade for Outdoor Wood Projects\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:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/10497949303078_5aa57a4f40ee.jpg\" alt=\"Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws installing an exterior pergola beam connection outdoors under clear sky conditions\" class=\"tnblock-img\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"copy\"\u003e\n        \u003cp\u003eOutdoor structural fastening needs a screw that can handle treated lumber and exposed conditions. The double-barrier coating is a major reason this screw fits pergolas, fences, ledgers, and similar exterior work.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003eDouble-barrier coating provides corrosion resistance equivalent to hot-dip galvanization\u003c\/li\u003e\n          \u003cli\u003eSuitable for certain exterior and preservative-treated 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-4\" class=\"acc flip\"\u003e\n  \u003csummary\u003e\u003ch2\u003eClean Seating, Less Fight\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:\/\/cdn.anglera.com\/assets\/74d6ed76-fe0d-4d23-a9db-1f8749ca9ef2\/10497949303078_813ef1490929.jpg\" alt=\"Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws close-up showing tan and black screw bodies, washer heads, 6-lobe drive, and SawTooth point on a plain background\" class=\"tnblock-img\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"copy\"\u003e\n        \u003cp\u003eSome structural screws drive hard and chew up bits. This one uses a T40 6-lobe drive for solid engagement, and the underhead nibs help the head finish flush with less surface tear-out.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003eT40 6-lobe drive improves bit engagement and bit life\u003c\/li\u003e\n          \u003cli\u003eUnderhead nibs help reduce splintering as the head seats flush\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-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\u003eApplication\u003c\/th\u003e\n        \u003ctd\u003eFastening wood-to-wood\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eLength\u003c\/th\u003e\n        \u003ctd\u003e4 in.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eShank Diameter\u003c\/th\u003e\n        \u003ctd\u003e0.220 in.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eHead Diameter\u003c\/th\u003e\n        \u003ctd\u003e0.760 in.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eThread Length\u003c\/th\u003e\n        \u003ctd\u003e2-3\/8 in.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eDrive Type\u003c\/th\u003e\n        \u003ctd\u003eT40 6-lobe\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eHead Type\u003c\/th\u003e\n        \u003ctd\u003eWasher head\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003ePoint Type\u003c\/th\u003e\n        \u003ctd\u003eSawTooth point\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eCoating\u003c\/th\u003e\n        \u003ctd\u003eDouble-barrier coating\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eColor\u003c\/th\u003e\n        \u003ctd\u003eTan\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003ePackaging Quantity\u003c\/th\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth\u003eMaterial\u003c\/th\u003e\n        \u003ctd\u003eSteel\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\u003eDrive Interface\u003c\/strong\u003e\n          \u003cdiv class=\"compat-detail\"\u003eUses a T40 6-lobe drive. Simpson Strong-Tie lists replacement driver bit BIT40T-134-R2.\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\/material.svg\" alt=\"material\" class=\"icon-sm\"\u003e\n        \u003cdiv\u003e\n          \u003cstrong\u003eMaterial Use\u003c\/strong\u003e\n          \u003cdiv class=\"compat-detail\"\u003eDesigned for structural wood-to-wood and engineered wood fastening, including ledgers and certain mass timber connections.\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\u003eOutdoor Applications\u003c\/strong\u003e\n          \u003cdiv class=\"compat-detail\"\u003eDouble-barrier coating is intended for certain exterior and preservative-treated wood applications as described in the evaluation report.\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\"\u003eConstruction\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eGeneral Contracting\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eCarpentry\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eRemodeling\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eOutdoor Framing\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eLedger Fastening\u003c\/span\u003e\n      \u003cspan class=\"tag\"\u003eFence and Pergola Builds\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\"\u003eWhen you are running a lot of these in treated lumber, use the correct T40 bit and keep steady pressure on the drill as the washer head seats. That gets you full engagement and helps avoid chewing up the drive on repetitive installs.\u003c\/p\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\u003eOne of the easier ways to get structural wood connections done without messing with lag screws\u003c\/h3\u003e\n    \u003cp\u003eThe Simpson Strong-Tie SDWS22400DBMB Strong-Drive SDWS Timber Screws (Exterior Grade) gives you the kind of speed, bite, and exterior-ready protection that makes sense for real wood framing and outdoor build work.\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWho it's for:\u003c\/strong\u003e Contractors, remodelers, deck and fence builders, and serious DIY users working on structural wood-to-wood fastening outdoors.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhy it stands out:\u003c\/strong\u003e The fast-start SawTooth point, strong thread design, washer head, and T40 drive make it quicker and cleaner to run than a lot of old-school alternatives.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWorth knowing:\u003c\/strong\u003e This is a 250-count tan pack, so it is a good fit when you need jobsite quantity. Just make sure you are matching it to approved structural applications and using the right T40 bit.\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\u003eWhat kind of fastening is this screw designed for?\u003c\/strong\u003e It is designed for structural wood-to-wood fastening, including ledgers and certain engineered wood and mass timber connections.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDoes this screw usually require predrilling?\u003c\/strong\u003e Simpson Strong-Tie states the SawTooth point eliminates the need for predrilling in most applications.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhat driver size does it use?\u003c\/strong\u003e This screw uses a T40 6-lobe drive.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eIs this version intended for exterior use?\u003c\/strong\u003e Yes. It has a double-barrier coating that Simpson Strong-Tie says provides corrosion resistance equivalent to hot-dip galvanization for certain exterior and preservative-treated wood applications.\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":52999306707238,"sku":"SDWS22400DBMB","price":153.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/1582\/5958\/files\/SDWS22400DBMB_00746056168201_Product_Photo_01_bea2223f-0329-498a-96f0-83bfdd6ff8e3.jpg?v=1779135461","url":"https:\/\/www.toolnut.com\/products\/simpson-strong-tie-strong-drive-sdws-timber-exterior-grade-screw-0-220-in-x-4-in-t40-tan-250-pack-sdws22400dbmb","provider":"Tool Nut","version":"1.0","type":"link"}