{"product_id":"hillman-5-16-in-x-3-1-2-in-l-stainless-steel-carriage-bolt-25-pk","title":"HILLMAN 5\/16 in. X 3-1\/2 in. L Stainless Steel Carriage Bolt 25 pk","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Hillman 5\/16 in. x 3-1\/2 in. L Stainless Steel Carriage Bolt — a durable, weather-ready fastener designed to hold strong in outdoor and indoor joinery. This 25-pack boxed set provides reliable, ready-to-use hardware for multiple projects, from cozy DIY builds to larger outdoor installations.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSize and fit\u003c\/strong\u003e: 5\/16 in. diameter with a 3-1\/2 in. length, ideal for wood-to-wood connections and thicker lumber assemblies.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Premium stainless steel for superior corrosion resistance, making it a dependable choice in humidity, rain, and coastal environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThread type\u003c\/strong\u003e: Coarse thread delivers quicker bite in softwood and common lumber, speeding up assembly without sacrificing grip.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHead design\u003c\/strong\u003e: Domed carriage bolt head with a square undercut that sits into the wood, preventing rotation as you tighten the nut for a clean, snag-free finish.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePackaging\u003c\/strong\u003e: 25 bolts per boxed set, providing enough fasteners to tackle multiple projects without constant reordering.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e: Pair with matching nuts and washers (not included) for secure, lasting joints in fences, decks, pergolas, and other timber builds.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal uses and applications\u003c\/h3\u003e\n\u003cp\u003eWhether you're building a new backyard deck, reinforcing a fence line, installing outdoor furniture, or assembling shelving supports, these stainless steel carriage bolts offer reliable, long-lasting performance. They’re particularly well-suited for outdoor projects where exposure to moisture demands materials that resist rust without compromising strength.\u003c\/p\u003e \u003ch3\u003eWhy choose Hillman stainless carriage bolts\u003c\/h3\u003e\n\u003cp\u003eHillman’s trusted hardware heritage shines through in every bolt: robust stainless steel construction, precise 5\/16 in. diameter and 3-1\/2 in. length, and a design that minimizes snagging while maximizing joint integrity. This isn’t just another fastener—it's a dependable solution for wood joinery that looks and performs as well as you expect from a leading hardware brand.\u003c\/p\u003e \u003ch3\u003eInstallation tips\u003c\/h3\u003e\n\u003col\u003e \u003cli\u003ePre-drill a hole slightly larger than the bolt’s shank to prevent wood splitting.\u003c\/li\u003e \u003cli\u003eInsert the bolt so the square undercut seats into the wood surface, then thread on the nut from the opposite side.\u003c\/li\u003e \u003cli\u003eTighten with a wrench until secure, taking care not to overtighten and risk damaging the lumber.\u003c\/li\u003e\n\u003c\/ol\u003e \u003cp\u003eFor enduring projects that demand corrosion resistance and dependable strength, the Hillman 5\/16 in. x 3-1\/2 in. Stainless Steel Carriage Bolt (25 pk) delivers consistent performance, straightforward installation, and long-term value for both DIY enthusiasts and professional builders.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hillman","offers":[{"title":"Default Title","offer_id":52176672817426,"sku":"59642","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/59642_LA.eps_High.jpg?v=1775591087","url":"https:\/\/nationalhardwaregroup.com\/products\/hillman-5-16-in-x-3-1-2-in-l-stainless-steel-carriage-bolt-25-pk","provider":"National Hardware Group","version":"1.0","type":"link"}