{"product_id":"simpson-strong-drive-sdcfc-timber-cfc-screw-0-315-in-x-4-3-4-in-t40-e-coat","title":"Simpson Strong-Drive SDCFC TIMBER-CFC Screw - 0.315 in. x 4-3\/4 in. T40 (Black E-Coat)","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSimpson Strong-Drive SDCFC TIMBER-CFC Screw - 0.315 in. x 4-3\/4 in. T40, E-Coat\u003c\/strong\u003e by Simpson Strong-Tie is a heavy-duty structural wood screw engineered for demanding timber framing, mass timber, and engineered wood applications. The redesigned SDCFC screw delivers a fully threaded shank for superior withdrawal resistance, a compact cylinder head that sits flush or countersinks cleanly, and a SawTooth point that starts fast and drives easily - eliminating the need for predrilling in most applications. The black e-coat electrocoating finish combines construction-durable corrosion resistance with a refined aesthetic, making this screw a reliable choice wherever large wood members need to be fastened with confidence.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact cylinder head\u003c\/strong\u003e - helps the screw countersink for a clean, flush finish whether left exposed or driven below the surface, keeping the finished appearance professional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty, fully-threaded shank (0.230 in. shank diameter)\u003c\/strong\u003e - provides superb withdrawal resistance across the full shank length, giving structural connections the holding power needed in large timber and engineered wood assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSawTooth point\u003c\/strong\u003e - enables fast starts and easy driving while reducing installation torque, so the screw seats quickly without splitting heavy members or requiring predrilled pilot holes in most applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack e-coat electrocoating finish\u003c\/strong\u003e - delivers a construction-durable nonmetallic coating for corrosion resistance in interior dry-service applications, while the dark color blends in wherever the screw head remains visible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep T40 6-lobe recess\u003c\/strong\u003e - creates a secure, high-torque connection between bit and screw head, reducing cam-out during installation for smoother, more controlled driving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliant with CSA O86:24 hydrogen embrittlement requirements\u003c\/strong\u003e - the optimized hardness profile and e-coat finish together help mitigate brittle fracture risk, supporting long-term structural reliability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-3\/4 in. overall length with 4-1\/4 in. thread length\u003c\/strong\u003e - maximizes thread engagement deep into the receiving member for strong, lasting connections in beam reinforcement, glulam, and cross-laminated timber (CLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy This Product\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngineered specifically for mass timber and heavy timber work\u003c\/strong\u003e - the SDCFC is designed for demanding applications involving large structural members such as glulam, cross-laminated timber, and multi-ply engineered wood, where a standard wood screw would fall short\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo predrilling needed in most applications\u003c\/strong\u003e - the SawTooth point reduces installation torque enough that predrilling is unnecessary in typical scenarios, cutting labor time and keeping the job moving on timber framing and beam fastening projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeets CSA O86:24 hydrogen embrittlement requirements\u003c\/strong\u003e - the combination of the optimized hardness profile and the nonmetallic e-coat finish reduces the risk of brittle fracture, which is a critical consideration for long-term structural performance in engineered wood construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean aesthetic for exposed or countersunk installations\u003c\/strong\u003e - the cylinder head and black e-coat finish mean this screw looks intentional whether driven flush on an exposed beam connection or countersunk into a finished timber surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Simpson Strong-Tie\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Strong-Drive SDCFC TIMBER-CFC Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 4-3\/4 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length:\u003c\/strong\u003e 4-1\/4 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter:\u003c\/strong\u003e 0.230 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter:\u003c\/strong\u003e 0.400 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Type:\u003c\/strong\u003e Cylinder Head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type:\u003c\/strong\u003e T40 6-Lobe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type:\u003c\/strong\u003e SawTooth Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e E-coat Electrocoating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e E-coat Electrocoating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003e\n\u003ch3\u003eAvailable Pack Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSDCFC8X120-R50:\u003c\/strong\u003e 50 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSDCFC8X120:\u003c\/strong\u003e 250 Pk - includes T40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApproved Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered Wood\u003c\/li\u003e\n\u003cli\u003eFastening Wood-to-Wood\u003c\/li\u003e\n\u003cli\u003eTimber Framing\u003c\/li\u003e\n\u003cli\u003eBeam Reinforcement\u003c\/li\u003e\n\u003cli\u003eFastening Wall-to-Wall\u003c\/li\u003e\n\u003cli\u003eFastening Support Beams\u003c\/li\u003e\n\u003cli\u003eHeavy Timber\u003c\/li\u003e\n\u003cli\u003eGlulam\u003c\/li\u003e\n\u003cli\u003eFastening Butt Joists\u003c\/li\u003e\n\u003cli\u003eMass Timber \/ Cross-Laminated Timber\u003c\/li\u003e\n\u003cli\u003eEngineered Wood - Multi-Ply Fastening\u003c\/li\u003e\n\u003cli\u003eFastening Simpson Strong-Tie Connectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eT40, 6-lobe driver bit (replacement bit: BIT40T-134-R2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/strong\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"50 Pk","offer_id":67653508530406,"sku":"SDCFC8X120-R50","price":103.21,"currency_code":"USD","in_stock":true},{"title":"250 Pk","offer_id":67653508563174,"sku":"SDCFC8X120","price":415.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0398\/5188\/4705\/files\/SDCFC8X120-R50_00707392029014_Product_Photo_01.jpg?v=1791499548","url":"https:\/\/factorydirectsupply.com\/products\/simpson-strong-drive-sdcfc-timber-cfc-screw-0-315-in-x-4-3-4-in-t40-e-coat","provider":"Factory Direct Supply","version":"1.0","type":"link"}