{"product_id":"1-2-in-x-7-in-galvanized-carriage-bolt-kit-25-pack-heavy-duty","title":"1\/2 in x 7 in Galvanized Carriage Bolt Kit (25 Pack) - Heavy Duty","description":"\u003cp\u003eIn this review the 1\/2 in x 7 in galvanized carriage bolt kit is evaluated for builders, deck makers, and DIYers who need reliable exterior fasteners. The bottom line: this kit stands out because it pairs full-length 7 in Grade 307A carriage bolts with USS flat washers and Grade 2\/A hex nuts, all hot dip galvanized for superior corrosion resistance, making it a practical choice when long, semi-flush carriage bolts are required for outdoor structures.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e1\/2 in diameter, 7 in length:\u003c\/strong\u003e provides deep embedment for thick timbers and multi-layer connections where a long fastener is required.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHot dip galvanized coating:\u003c\/strong\u003e helps protect the hardware against rust and makes the kit suitable for exterior projects and ACQ treated lumber.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFlat head carriage design:\u003c\/strong\u003e offers a semi-flush finish that suits decks, gazebos, pergolas, and other heavy duty applications while preventing snagging.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete kit contents:\u003c\/strong\u003e includes 25 carriage bolts, 25 USS flat washers, and 25 hex nuts so installers have matching hardware for a full project run.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMeets common standards:\u003c\/strong\u003e manufactured to standards that align with ASME and ASTM references, giving confidence about basic dimensional and material expectations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is best for contractors, deck builders, pergola fabricators, and serious DIYers working on outdoor timber projects who need long, corrosion-resistant carriage bolts and prefer to buy matched nuts and washers in bulk. The semi-flush carriage head works well when a cleaner finished surface is desired without exposed nut heads on the visible face.\u003c\/p\u003e\n\u003cp\u003eThose who only need short carriage bolts or specialized high-strength nuts should look elsewhere; this kit supplies Grade 307A bolts with Grade 2\/A nuts and USS thick washers, which suit many structural and exterior uses but are not a substitute for high-grade structural fasteners where specified by engineering documents.\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\u003eComplete 25-piece sets of bolts, washers, and nuts simplify procurement and ensure matched components.\u003c\/li\u003e\n \u003cli\u003eHot dip galvanized finish offers lasting corrosion resistance for outdoor installations and ACQ treated wood.\u003c\/li\u003e\n \u003cli\u003eLong 7 in length and 1\/2 in diameter provide strong hold for thick timber connections and multi-layer assemblies.\u003c\/li\u003e\n \u003cli\u003eFlat head provides a semi-flush, finished appearance on exposed surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eGrade 2\/A hex nuts are appropriate for general use but are not a replacement for higher grade structural nuts where engineers specify greater strength.\u003c\/li\u003e\n \u003cli\u003eHead diameter and profile may require pre-drilled countersinks or larger holes in some trim work to achieve a fully flush look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1\/2 in\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\u003eHead diameter\u003c\/td\u003e\n\u003ctd\u003e1.062 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWasher outside diameter\u003c\/td\u003e\n\u003ctd\u003e1-3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNut wrench size\u003c\/td\u003e\n\u003ctd\u003e3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003e25 bolts, 25 USS flat washers, 25 hex nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eHot dip galvanized (exterior grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 1\/2 in x 7 in galvanized carriage bolt kit is a solid value for anyone fastening thick lumber in outdoor applications; the hot dip galvanized finish and included washers and nuts make it convenient and durable for decks, pergolas, and gazebos. Buy this kit when you need long, semi-flush carriage bolt fixings for exterior work, but specify higher grade fasteners if your project requires engineered high-strength connections.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these bolts suitable for ACQ treated lumber?\u003c\/strong\u003e\u003cbr\u003eYes, the hot dip galvanized coating is specified as suitable for use with ACQ treated lumber to resist corrosion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the kit include?\u003c\/strong\u003e\u003cbr\u003eEach kit includes 25 Grade 307A carriage bolts, 25 USS thick flat washers, and 25 Grade 2\/A hex nuts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the carriage bolt sit flush?\u003c\/strong\u003e\u003cbr\u003eThe flat carriage head provides a semi-flush finish; some installations may require countersinking or a slightly larger hole for a fully flush appearance.\u003c\/p\u003e","brand":"Makers Bolt","offers":[{"title":"Default Title","offer_id":48253462347995,"sku":"B0CSTDDNNG","price":62.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71tzSWCowWL._SL1500.jpg?v=1778322201","url":"https:\/\/gearmusthave.com\/products\/1-2-in-x-7-in-galvanized-carriage-bolt-kit-25-pack-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}