{"product_id":"value-collection-489049ps-carriage-bolt-5-16-18-2-1-4-in-grade-2","title":"Value Collection 489049PS Carriage Bolt 5\/16-18 2-1\/4 in Grade 2","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 489049PS is a 5\/16-18 UNC carriage bolt with a 2-1\/4 inch length under head, manufactured from Grade 2 steel with a zinc-plated finish. The square neck below the domed head locks into wood or metal substrates to prevent rotation during fastening, eliminating the need for a second wrench on the bolt side. This bolt meets ASTM A307 standards and is suited for general-purpose structural and mechanical assembly work across construction, manufacturing, and maintenance applications. Available in minimum order quantities of 100 units per package.\u003c\/p\u003e\n\u003cp\u003eThis carriage bolt is used in residential and light commercial construction, woodworking, metal fabrication, and equipment assembly where a clean, rounded head profile is required on the exposed side of a joint. The square neck provides positive anti-rotation purchase in pre-drilled holes through wood, metal, or composite materials. Typical applications include deck construction, framing connections, machinery guards, conveyor structures, and trailer components where Grade 2 fastener strength ratings are acceptable per the design specification.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC thread size for broad tool and hardware compatibility\u003c\/li\u003e\n  \u003cli\u003e2-1\/4 inch length under head suits medium-depth through-fastening applications\u003c\/li\u003e\n  \u003cli\u003eSquare neck prevents rotation without tooling on the bolt side\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel meets ASTM A307 fastener standard\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish provides baseline corrosion resistance for dry and semi-exposed environments\u003c\/li\u003e\n  \u003cli\u003eDome head delivers a smooth, flush-facing appearance on the non-nut side\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose replacement or new-installation carriage bolt compatible with standard 5\/16 inch pre-drilled clearance holes in wood, steel, and composite assemblies where ASTM A307 Grade 2 fasteners are specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by tradespeople, carpenters, ironworkers, and maintenance mechanics using standard hand or power tools. Insert the bolt through a pre-drilled hole sized to allow the square neck to seat and bind against the material, preventing spin. Apply the appropriate flat washer and nut to the threaded end and tighten to the torque value specified in the applicable structural or equipment design documents. Do not use impact tools at final torque without a verified torque specification, and do not exceed the Grade 2 tensile rating by substituting this fastener in applications requiring Grade 5 or Grade 8 hardware.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 2-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Type\u003c\/strong\u003e: Square\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASTM A307\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161603\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 489049PS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693096304946,"sku":"489049PS","price":2543.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/37b1a4f42208844dffbaa8e06a412801.jpg?v=1788307271","url":"https:\/\/voomisupply.com\/products\/value-collection-489049ps-carriage-bolt-5-16-18-2-1-4-in-grade-2","provider":"Voomi Supply","version":"1.0","type":"link"}