{"product_id":"fastenmaster-headlok-heavy-duty-flathead-fastener-7-in-no-predrill","title":"FastenMaster HeadLOK Heavy-Duty Flathead Fastener 7 in - No Predrill","description":"\u003cp\u003eOur review of the FastenMaster HeadLOK 7 in heavy-duty flathead fastener finds it best suited for carpenters, deck builders, and DIYers who need a strong, no-predrill wood-to-wood connection. The single biggest reason to buy is its claimed ability to replace 3\/8 in lag screws without predrilling while offering higher shear values and long-term corrosion resistance, which cuts labor and speeds framing tasks. The package even includes a Spider Drive bit so installers can get going immediately.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStronger than 3\/8 in lag screws:\u003c\/strong\u003e The fastener is designed to meet code and delivers higher shear values than a comparable 3\/8 in lag screw for demanding structural connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo predrilling required:\u003c\/strong\u003e Aggressive threading and a sharp gimlet point let the screw zip into wood or OSB, saving time on typical deck framing and stair stringer work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Spider Drive:\u003c\/strong\u003e The 8 points of contact maximize bit fit and reduce stripping, making installation cleaner and reducing lost fasteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWafer head design:\u003c\/strong\u003e The flathead eliminates the need for washers and increases pull-through strength for deck ledger and framing applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed corrosion resistance:\u003c\/strong\u003e ACQ approved finish promises long-term protection in treated lumber projects, reducing worry about premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree driver bit included:\u003c\/strong\u003e Each package includes a Spider Driver bit so crews have the exact tool for the fastener right away.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe HeadLOK 7 in fasteners are ideal for professional contractors and serious DIYers working on deck framing, fence posts, stair stringers, pressure-treated retaining walls, and other dimensional wood-to-wood projects where strength and speed matter. They suit jobs where eliminating predrilling saves significant labor and time.\u003c\/p\u003e\u003cp\u003eThose building fine furniture, working with thin trim, or fastening into masonry should look elsewhere; this product is intended for heavy structural wood connections and may be overkill or unsuitable for delicate work or non-wood substrates.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh shear strength that can replace 3\/8 in lag screws in many wood-to-wood structural uses.\u003c\/li\u003e\n\u003cli\u003eSpeeds installation by eliminating predrill steps thanks to aggressive threads and gimlet point.\u003c\/li\u003e\n\u003cli\u003eSpider Drive bit reduces cam-out and stripping, improving installation consistency.\u003c\/li\u003e\n\u003cli\u003eACQ approved corrosion resistance makes it appropriate for treated lumber and outdoor projects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDesigned specifically for structural wood-to-wood use and may be excessive for light-duty or delicate fastening tasks.\u003c\/li\u003e\n\u003cli\u003eAt 7 in length, these are not suitable for thin materials or where shorter fasteners are required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFASTENMASTER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eHeadLOK heavy-duty flathead fastener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCount\u003c\/td\u003e\n\u003ctd\u003e250 per package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive\u003c\/td\u003e\n\u003ctd\u003ePatented Spider Drive (8-point) with free driver bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\/Corrosion\u003c\/td\u003e\n\u003ctd\u003eACQ approved, guaranteed corrosion resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe FastenMaster HeadLOK 7 in fastener is a practical choice for builders who need a strong, fast alternative to 3\/8 in lag screws in wood framing and decking. With no predrill installation, an anti-cam-out Spider Drive, and ACQ-approved corrosion protection, it represents good value for structural wood-to-wood work where speed and holding power matter.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan these replace 3\/8 in lag screws?\u003c\/strong\u003e\u003cbr\u003eYes, they are engineered to provide stronger shear values than 3\/8 in lag screws and are intended as a no-predrill alternative for wood-to-wood connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a special bit to install them?\u003c\/strong\u003e\u003cbr\u003eThe package includes a Spider Driver bit; the Spider Drive system provides 8 points of contact to reduce stripping and improve bit fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these safe for treated lumber?\u003c\/strong\u003e\u003cbr\u003eYes, the finish is ACQ approved and the manufacturer guarantees corrosion resistance for the life of the project.\u003c\/p\u003e","brand":"FASTENMASTER","offers":[{"title":"Default Title","offer_id":48189323018459,"sku":"B004Y1E92Q","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41vaAS3ydXL._AC_SL1000.jpg?v=1769399104","url":"https:\/\/gearmusthave.com\/products\/fastenmaster-headlok-heavy-duty-flathead-fastener-7-in-no-predrill","provider":"GearMustHave","version":"1.0","type":"link"}