{"product_id":"1-2-in-x-3-5-in-galvanized-carriage-bolt-kit-25-pack-heavy-duty","title":"1\/2 in x 3.5 in Galvanized Carriage Bolt Kit (25 Pack) - Heavy Duty","description":"\u003cp\u003eIn this review the 1\/2 in x 3.5 in galvanized carriage bolt kit is evaluated for outdoor construction and heavy timber projects. The bottom line: this kit is aimed at homeowners, builders, and makers who need a complete fastener solution with corrosion resistance and a semi-flush finish; the single biggest reason to buy is the hot dip galvanized coating paired with included USS thick washers and hex nuts, which delivers ready-to-use durability for decks, gazebos, pergolas, and ACQ-treated lumber.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Comes with 25 carriage bolts, 25 USS flat washers and 25 hex nuts so projects can start immediately without sourcing separate hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot dip galvanized finish:\u003c\/strong\u003e Provides superior corrosion resistance for exterior use and long-term exposure to weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemi-flush flat head:\u003c\/strong\u003e The flat head yields a low-profile, semi-flush finish that is suited to decking and visible timber connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild quality:\u003c\/strong\u003e Grade 307A bolts and Grade 2\/A hex nuts meet common standards for strength, ensuring reliable performance in heavy-duty applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher sizing:\u003c\/strong\u003e USS thick washers with a 1-3\/8 in outside diameter distribute load and reduce wood crushing for stronger joints in lumber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eACQ compatible:\u003c\/strong\u003e Safe for use in ACQ treated lumber, so the kit is appropriate for modern treated wood outdoor projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is ideal for DIYers, deck builders, and small contractors who need a dependable supply of carriage bolts for outdoor timber framing, pergolas, or gazebo construction; the included nuts and washers make it convenient for repetitive fastening work. The product suits anyone looking for a corrosion-resistant, semi-flush fastener solution sized to common deck and post connections.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include projects that require high-grade structural bolts above Grade 307A or custom lengths and specialty head styles; also, if stainless steel fasteners are required for chemical exposure or aesthetic reasons, a stainless option is a better choice.\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\u003eGood value: the kit bundles bolts, USS flat washers and hex nuts so users pay once for a complete set.\u003c\/li\u003e\n\u003cli\u003eDurable coating: hot dip galvanizing enhances corrosion resistance for outdoor use and treated lumber environments.\u003c\/li\u003e\n\u003cli\u003ePractical sizing: 1\/2 in diameter and 3.5 in length suit many deck and post applications while the 3\/4 in nut wrench size is common and easy to work with.\u003c\/li\u003e\n\u003cli\u003eTrusted finish: the flat head provides a neat, semi-flush appearance on visible timber surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot stainless steel: although galvanized for corrosion protection, it may not meet all environments where stainless fasteners are preferred.\u003c\/li\u003e\n\u003cli\u003eSingle length only: projects requiring other lengths will need additional purchases.\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\u003e3.5 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 carriage 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\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 3.5 in galvanized carriage bolt kit is a practical, economical choice for exterior woodworking and general deck construction because it combines the right dimensions, a hot dip galvanized finish, and included washers and nuts for immediate use. For those wanting reliable corrosion resistance at a reasonable price for routine outdoor projects, this kit represents good value and dependable performance.\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 and specified materials make the kit suitable for use with ACQ treated lumber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is included in the pack?\u003c\/strong\u003e\u003cbr\u003eThe pack 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\u003eWhat tool size is required for the nuts?\u003c\/strong\u003e\u003cbr\u003eThe hex nuts require a 3\/4 in wrench or socket for proper tightening.\u003c\/p\u003e","brand":"Makers Bolt","offers":[{"title":"Default Title","offer_id":48249029329115,"sku":"B0DXSRTJHT","price":46.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61fpFJRjN9L._SL1500_4637eed0-e1b6-4ac3-865b-2aab471cdaf3.jpg?v=1770962218","url":"https:\/\/gearmusthave.com\/products\/1-2-in-x-3-5-in-galvanized-carriage-bolt-kit-25-pack-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}