{"product_id":"57185-hillman-3-8-in-x-4-1-2-in-l-zinc-plated-steel-carriage-bolt-50-pk","title":"Hillman 3\/8 in. x 4-1\/2 in. Zinc-Plated Steel Carriage Bolt, 50-Pack","description":"\u003ch1\u003eHillman Zinc-Plated 3\/8 in. x 4-1\/2 in. Carriage Bolts (50-Pack)\u003c\/h1\u003e\n    \u003cp\u003e\u003cstrong\u003eDurable zinc-plated steel carriage bolts for fastening wood-to-wood or wood-to-metal projects. The round head with square neck locks into wood for a clean, semi-flush finish and resists spinning during installation. Ideal for decks, fences, and general construction.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003chr\u003e\n    \u003ch2\u003eKey Features:\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eReliable Wood-to-Metal Fastening:\u003c\/strong\u003e Square neck locks into wood to prevent spinning and provide secure connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean, Semi-Flush Finish:\u003c\/strong\u003e Rounded head eliminates the need for a washer in many applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Zinc Plating:\u003c\/strong\u003e Provides moderate rust resistance and a consistent silver finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Threading:\u003c\/strong\u003e 3\/8\"-16 coarse right-hand threads fit common nuts and hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk Value Pack:\u003c\/strong\u003e 50 bolts per pack for larger builds and repeat projects\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003chr\u003e\n    \u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\n    \u003ctable\u003e\n        \u003cthead\u003e\n            \u003ctr\u003e\n                \u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n                \u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n            \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n            \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteel, zinc-plated (Alloy Steel listed by manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZinc-plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilver\/Zinc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/8 inch (0.38 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-1\/2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/8\"-16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUNC (coarse)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRight-hand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeck\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSquare, self-locking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGrade 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.45 lb (pack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUsage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood-to-wood or wood-to-metal fastening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStyle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50-Pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e240183\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e008236087031\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Package Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInch\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003chr\u003e\n    \u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What materials can these carriage bolts be used with?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Designed for wood-to-wood and wood-to-metal fastening applications.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Do I need a special tool to hold the bolt when tightening?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e No— the square underside of the head locks into the wood to prevent spinning, allowing tightening from the nut side.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: Are these suitable for outdoor use?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e The zinc plating offers moderate corrosion resistance; for harsh coastal or long-term outdoor exposure, consider galvanized or stainless options.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What nuts should I use with these bolts?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Use 3\/8\"-16 coarse-thread nuts and compatible washers if needed.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003cp\u003e\u003cstrong\u003eQ: What is the length and diameter?\u003c\/strong\u003e\u003cbr\u003e\n    \u003cstrong\u003eA:\u003c\/strong\u003e Each bolt is 3\/8 inch diameter and 4-1\/2 inches long.\u003c\/p\u003e\n    \u003chr\u003e\n    \n    \u003ch2\u003eA Polished, Workhorse Fastener for Timeless Wood Builds\u003c\/h2\u003e\n    \u003cp\u003eThese zinc-plated carriage bolts bring a refined, purposeful gleam to carpentry, anchoring boards with a tidy, rounded head that sits beautifully flush. The square neck detail is the hero—subtle yet decisive, keeping lines clean and hardware discreet. Style them across deck balusters or cabinetry jigs for a unified, tailored look. Essential hardware that quietly elevates craftsmanship and durability in every space.\u003c\/p\u003e\n    \u003chr\u003e\u003ch2\u003eAI Review Summary:\u003c\/h2\u003e\u003cp\u003eAcross verified reviews, customers praise the consistent quality and value of the 50-pack, noting clean threads and reliable fit with 3\/8\"-16 nuts. Many highlight the square neck’s effective bite into wood, making installation straightforward and preventing bolt spin. The zinc finish is appreciated for its neat appearance and moderate corrosion resistance, though a minority recommend galvanized or stainless options for harsh outdoor conditions. Occasional feedback mentions minor variations in head stamping or finish, but performance remains solid. Representative quotes: “Perfect for deck and fence projects—threads were clean and every bolt usable.” “Square shoulder locks in great; no need to hold the head.” “Zinc is fine for most jobs, but I’d go galvanized near the ocean.”\u003c\/p\u003e\n    \u003chr\u003e\n    \u003cp\u003e\u003cstrong\u003eSecure your next build with these dependable Hillman carriage bolts—add the 50-pack to your cart today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hillman","offers":[{"title":"Default Title","offer_id":48991885099222,"sku":"240183","price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/5244\/2838\/files\/71wY9SW7Z0L._AC_SL1500.jpg?v=1783639031","url":"https:\/\/buildsupplyus.myshopify.com\/products\/57185-hillman-3-8-in-x-4-1-2-in-l-zinc-plated-steel-carriage-bolt-50-pk","provider":"Buildsupply","version":"1.0","type":"link"}