{"product_id":"spax-1-4-in-x-5-in-interior-washer-head-structural-wood-lag-screws","title":"SPAX 1\/4 in x 5 in Interior Washer Head Structural Wood Lag Screws","description":"\u003cp\u003eIn this review the SPAX 1\/4 in x 5 in Interior Washer Head Structural Wood Lag Screws are judged on durability, ease of installation and value for contractors and serious DIYers. The review finds these screws best for structural wood to wood connections where strength and reduced splitting matter most, thanks to patented serrated threads and a heat treated Grade 5 core. The included T-Star compatibility and bulk 500 pail make this a jobsite-focused option, though buyers should verify they have the correct driver bit despite mixed reports about the bit included.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented thread serration:\u003c\/strong\u003e The serrated threads reduce splitting and let the screw be driven faster and with less effort in most wood species.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat treated Grade 5 durability:\u003c\/strong\u003e Heat treatment increases core strength and lowers the risk of breakage during heavy structural work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher head design:\u003c\/strong\u003e The washer head gives a larger bearing surface for secure connections in wood to wood assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT-Star drive compatibility:\u003c\/strong\u003e The 6-lobe T-Star drive provides superior bit engagement for quicker installation and less cam-out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode recognized:\u003c\/strong\u003e ICC-ES report ESR-1782 means these screws are suitable for recognized structural wood to wood applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk 500 pail:\u003c\/strong\u003e Supplied in a 500 count pail for efficient jobsite use and fewer trips to restock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is aimed at professionals and experienced DIYers who need reliable, code-recognized lag screws for structural wood to wood connections, such as deck ledger attachments, heavy timber framing, and significant retrofit work. The bulk pail and high strength finish make it practical for contractors working across multiple jobs.\u003c\/p\u003e\n\u003cp\u003eThose working on small, occasional home projects or who prefer single-use retail packaging may find the 500 count pail excessive. Also confirm the driver bit compatibility before purchase if you do not already have a T-Star bit collection, since customers reported mixed experiences about the included bit.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuperior drive performance from the T-Star 6-lobe design reduces slippage and speeds installation.\u003c\/li\u003e\n\u003cli\u003ePatented serrated threads lower splitting and ease driving, especially in dense wood.\u003c\/li\u003e\n\u003cli\u003eHeat treated Grade 5 construction increases strength and reduces breakage under load.\u003c\/li\u003e\n\u003cli\u003eBulk 500 pail is economical for frequent users and jobsite stocking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReports are mixed about the included bit; some users may need to supply a separate T-Star bit.\u003c\/li\u003e\n\u003cli\u003eBulk packaging is not ideal for infrequent DIY users who need only a few screws.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAltenloh, Brink \u0026amp; Co\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1\/4 in x 5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead type\u003c\/td\u003e\n\u003ctd\u003eWasher head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive\u003c\/td\u003e\n\u003ctd\u003eT-Star 6-lobe (bit compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCorrosion-resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCount\u003c\/td\u003e\n\u003ctd\u003e500 per pail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eICC-ES Report ESR-1782\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SPAX 1\/4 in x 5 in washer head PowerLag screws are a strong, jobsite-ready choice for structural wood connections where reduced splitting and superior drive engagement matter. For contractors and heavy DIY projects the heat treated strength, serrated threads and code recognition deliver clear value, but occasional users should consider smaller packaging and confirm bit needs before purchase.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this product include a driver bit?\u003c\/strong\u003e\u003cbr\u003eSome packages include a bit but customer reports are mixed, so plan to have a T-Star bit on hand to ensure compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these screws suitable for structural wood to wood connections?\u003c\/strong\u003e\u003cbr\u003eYes, they are ICC-ES recognized for structural wood to wood applications under report ESR-1782.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these screws reduce splitting in hardwoods?\u003c\/strong\u003e\u003cbr\u003eThe patented thread serration is designed to reduce splitting and make driving easier in most wood species.\u003c\/p\u003e","brand":"Altenloh, Brink \u0026 Co","offers":[{"title":"Default Title","offer_id":48236800901339,"sku":"B018JQEKSY","price":189.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71_qwsroPuL._SL1500_1de56938-05c9-4715-a74d-527d5e319ae9.jpg?v=1770903647","url":"https:\/\/gearmusthave.com\/products\/spax-1-4-in-x-5-in-interior-washer-head-structural-wood-lag-screws","provider":"GearMustHave","version":"1.0","type":"link"}