{"product_id":"hillman-5-16-in-x-7-in-l-zinc-plated-steel-carriage-bolt","title":"HILLMAN 5\/16 in. X 7 in. L Zinc-Plated Steel Carriage Bolt","description":"\u003cdiv\u003e\n\u003cp\u003eMeet a dependable fastener designed for wood-first projects: the HILLMAN 5\/16 in. x 7 in. L Zinc-Plated Steel Carriage Bolt. Built for durability and ease, this bolt combines a classic carriage bolt design with a protective zinc finish to stand up to outdoor conditions and everyday use.\u003c\/p\u003e \u003cp\u003eWhat makes this carriage bolt stand out is its thoughtful combination of size, finish, and construction. With a 5\/16 in. diameter and 7 in. length, it’s a versatile option for common wood thicknesses and frame assemblies. The zinc-plated finish provides corrosion resistance for decks, fences, furniture frames, and other exterior woodworking projects. Made from Grade 2 steel, it offers reliable strength for standard carpentry tasks without adding unnecessary heft.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSize and material:\u003c\/strong\u003e 5\/16 in. diameter, 7 in. length, steel construction (Grade 2).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCoarse thread:\u003c\/strong\u003e Optimized for fast, secure bites into softwoods and many common lumber species.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Zinc-plated for rust resistance in indoor and outdoor environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHead design:\u003c\/strong\u003e Carriage bolt with a domed head and a square under-head shoulder to resist turning as you tighten with a nut.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Boxed, 1 piece per package.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication type:\u003c\/strong\u003e Ideal for wood-to-wood connections in decks, fences, furniture frames, and other timber assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose a carriage bolt for your project?\u003c\/h3\u003e \u003cp\u003eCarriage bolts differ from other fasteners because the square shoulder beneath the head bites into the wood, helping to prevent rotation during assembly. The smooth, rounded head provides a clean, unobtrusive finish on visible surfaces, while the coarse threads deliver strong, reliable engagement in softwood and many standard lumber species. This combination makes them especially well-suited for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDeck and railing frameworks where a flush-looking head is preferred and you want steady, no-slip performance.\u003c\/li\u003e \u003cli\u003eOutdoor furniture frames and garden structures that benefit from corrosion resistance without sacrificing strength.\u003c\/li\u003e \u003cli\u003eFencing components and timber-to-timber joints where quick installation with a reliable hold is important.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstall tips and best practices\u003c\/h3\u003e \u003cp\u003eFor the best results, pair this carriage bolt with a matching hex nut and washer as needed. Use a drill to create a shank hole through the piece receiving the bolt, allowing the bolt to pass through cleanly before threading on the nut on the opposite side. Tighten carefully to draw the pieces together without over-stressing the wood. Remember, the square under the head helps keep the bolt from turning as you tighten, so you can secure your joint with confidence.\u003c\/p\u003e \u003cp\u003eWhether you’re replacing aging hardware on an outdoor project or building a sturdy timber frame from scratch, this Hillman carriage bolt delivers straightforward strength, reliable corrosion resistance, and a finish designed to withstand the elements—making it a practical choice for DIYers, woodworkers, and professional installers alike.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hillman","offers":[{"title":"Default Title","offer_id":52171863752978,"sku":"57174","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/57174_LA.eps_High.jpg?v=1775503282","url":"https:\/\/nationalhardwaregroup.com\/products\/hillman-5-16-in-x-7-in-l-zinc-plated-steel-carriage-bolt","provider":"National Hardware Group","version":"1.0","type":"link"}