{"product_id":"construction-lag-screw-5-16in-x-14in-type-17-heavy-duty","title":"Construction Lag Screw 5\/16in x 14in Type 17 - Heavy Duty","description":"\u003cp\u003eOur review of these construction lag screws finds they are aimed squarely at builders and DIYers who need strong, reliable fasteners for structural outdoor work; the single biggest reason to buy is their combination of heat treated steel and a triple coating that passed a 1200 hour salt spray test, which gives real confidence in corrosive or ACQ-treated lumber applications. The Type 17 notched point starts quickly without wandering and often reduces the need for pre-drilling, so the kit saves time on deck and framing tasks where depth and clamping force matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/16in Thread Diameter:\u003c\/strong\u003e provides a robust shank that handles high shear and compression forces for structural connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14in Length:\u003c\/strong\u003e reaches deep into 4x stock and large timbers, allowing tight pull-down of beams and posts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Treated Steel:\u003c\/strong\u003e increases tensile strength and durability for heavy duty use on decks and outdoor framing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Coated Finish:\u003c\/strong\u003e resists corrosion and is compatible with ACQ-treated lumber for long outdoor life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType 17 Notched Point:\u003c\/strong\u003e cuts quickly into wood to reduce walking and often lessens the need for pre-drilling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassed 1200 Hour Salt Spray Test:\u003c\/strong\u003e gives proven protection against coating failures in harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis is best for professional carpenters, deck builders and serious homeowners who need structural fasteners that hold up outdoors and in pressure-treated lumber. The long 14in length and heavy duty construction suit projects like deck ledger-to-post connections, timber framing and any application that requires deep penetration and high clamping force.\u003c\/p\u003e\n\u003cp\u003eThose doing delicate trim work or installing into thin or soft materials should look for smaller diameter or shorter screws; these are built for strength and depth rather than finishing surfaces or fast, frequently removed connections.\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\u003eHigh strength from heat treated steel gives confidence in structural applications.\u003c\/li\u003e\n\u003cli\u003eTriple coating and a 1200 hour salt spray pass mean strong corrosion resistance for outdoor use.\u003c\/li\u003e\n\u003cli\u003eType 17 notched point starts quickly and reduces the need for pre-drilling on many timbers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAt 14in length and 5\/16in diameter these are overkill for light carpentry or finish work where smaller screws are more appropriate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Diameter\u003c\/td\u003e\n\u003ctd\u003e~5\/16in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter\u003c\/td\u003e\n\u003ctd\u003e11\/16in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e14in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHeat treated steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Type\u003c\/td\u003e\n\u003ctd\u003eTorx\/Star\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint Type\u003c\/td\u003e\n\u003ctd\u003eType 17 notched extra sharp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eTriple coated, passed 1200 hour salt spray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThese lag screws are a solid value for anyone needing heavy duty, corrosion resistant fasteners for outdoor structural work; their heat treated core and proven coating make them a dependable choice for decks, timbers and ACQ-treated lumber where deep penetration and long-term durability matter.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these suitable for pressure treated lumber?\u003c\/strong\u003e\u003cbr\u003eYes, the triple coating and stated compatibility make them appropriate for ACQ-treated lumber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I need to pre-drill for 4x6s?\u003c\/strong\u003e\u003cbr\u003eThe Type 17 notched point often reduces the need for pre-drilling, but material density and equipment may still make pilot holes advisable for exact alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these be used for decking ledger connections?\u003c\/strong\u003e\u003cbr\u003eYes, the 14in length and strong shank make them suitable for deep ledger and beam connections in deck construction.\u003c\/p\u003e","brand":"Jake Sales","offers":[{"title":"Default Title","offer_id":48613073060059,"sku":"B07ZWLCG57","price":217.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61usjW-TIaL._SL1500_da9bfe39-cbb7-4fb8-bd28-5035388c7331.jpg?v=1778463426","url":"https:\/\/gearmusthave.com\/products\/construction-lag-screw-5-16in-x-14in-type-17-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}