{"product_id":"value-collection-215257msc-carriage-bolt-5-16-18-1-in-grade-8","title":"Value Collection 215257MSC Carriage Bolt 5\/16-18 1 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 215257MSC is a Grade 8 alloy steel carriage bolt with a 5\/16-18 UNC thread and a 1-inch length under head. The square neck beneath the domed head locks into place as the bolt is drawn into wood or soft material, preventing rotation during tightening. A zinc trivalent chromate finish provides corrosion resistance in general-purpose and light outdoor applications. This bolt is fully threaded along the full 1-inch shank length. Installers in mechanical, construction, plumbing support, and electrical mounting applications rely on Grade 8 hardware when higher tensile strength is required over standard Grade 5 or Grade 2 fasteners.\u003c\/p\u003e\n\u003cp\u003eThis carriage bolt is suited for wood-to-metal connections, equipment mounting, structural assemblies, and support framing where a smooth, rounded head profile is needed on the finished face. The fully threaded shank allows nut engagement along the entire length, making it practical for thin-material stack-ups. The 5\/16-18 thread size is a common fastener dimension across HVAC equipment mounting, panel framing, plumbing support structures, and general trade work. Minimum order quantity is 10 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile strength in demanding installations\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC fully threaded shank allows nut engagement along the full 1-inch length\u003c\/li\u003e\n  \u003cli\u003eSquare neck prevents bolt rotation during tightening without requiring a wrench on the head\u003c\/li\u003e\n  \u003cli\u003eZinc trivalent chromate finish improves corrosion resistance over standard zinc plating\u003c\/li\u003e\n  \u003cli\u003eConforms to SAE J429 fastener standard\u003c\/li\u003e\n  \u003cli\u003eRounded dome head provides a clean, flush appearance on the exposed face\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 5\/16-18 UNC carriage bolt for use in any application requiring Grade 8 alloy steel hardware with a square-neck, fully threaded profile and SAE J429 compliance.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a properly sized clearance hole that allows the square neck to seat flush and resist rotation. A standard wrench or socket is applied to the nut side only — no tool contact is needed at the head. Ensure the mating material is suitable for square-neck engagement to prevent the bolt from spinning during torque application. Follow applicable structural or equipment manufacturer torque guidelines for 5\/16-18 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 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Style\u003c\/strong\u003e: Fully Threaded\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: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Trivalent Chromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: SAE J429\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: 0.03 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 100 pieces per package\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\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: 215257MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699869450546,"sku":"215257MSC","price":798.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5245e03264f1f6b79876ed52378f1427.jpg?v=1788382285","url":"https:\/\/voomisupply.com\/products\/value-collection-215257msc-carriage-bolt-5-16-18-1-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}