{"product_id":"value-collection-217377msc-carriage-bolt-5-8-11-8-in-grade-8","title":"Value Collection 217377MSC Carriage Bolt 5\/8-11 8 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 217377MSC is a fully threaded carriage bolt designed for high-strength fastening applications in structural, mechanical, and general industrial assembly. Built to Grade 8 alloy steel with a zinc trivalent chromate finish, this bolt delivers superior tensile strength and corrosion resistance compared to lower-grade fasteners. It features a 5\/8-11 UNC thread and an 8-inch length under head, making it suitable for through-bolt applications that require deep thread engagement. The square neck under the domed head prevents rotation during installation without requiring a wrench on the bolt side. This fastener meets SAE J429 standards and is sold individually.\u003c\/p\u003e\n\u003cp\u003eThis carriage bolt is used in heavy-duty structural connections, equipment mounting, wood-to-metal assemblies, and fabrication work where Grade 8 strength is specified. The fully threaded shaft allows nut placement anywhere along the shank length, giving installers flexibility in material stack thickness. Typical users include ironworkers, millwrights, contractors, and maintenance trades working on structural frames, conveyor systems, agricultural equipment, and similar industrial applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile and proof load strength\u003c\/li\u003e\n  \u003cli\u003eZinc trivalent chromate finish provides corrosion protection and meets RoHS-compliant plating standards\u003c\/li\u003e\n  \u003cli\u003e5\/8-11 UNC fully threaded shank allows flexible nut positioning along full 8-inch length\u003c\/li\u003e\n  \u003cli\u003eSquare neck under domed head locks into material to prevent bolt rotation during tightening\u003c\/li\u003e\n  \u003cli\u003eManufactured to SAE J429 fastener standard\u003c\/li\u003e\n  \u003cli\u003eSold as a single unit — order exact quantities needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard UNC 5\/8-11 Grade 8 carriage bolt suitable for use with any 5\/8-11 UNC hex nut and compatible washers in structural or mechanical assemblies requiring SAE J429 Grade 8 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by qualified tradespeople using a standard wrench or impact tool on the mating nut while the square neck seats into the substrate to resist rotation. Always drill or punch a hole sized appropriately for the bolt diameter to allow the square neck to seat properly without splitting the material. Follow applicable structural or mechanical codes for torque requirements based on joint classification and Grade 8 specifications. Inspect the finish for damage before installation in corrosive environments and replace if coating integrity is compromised.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-11 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 8 inches\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\u003eFastener Standard\u003c\/strong\u003e: SAE J429\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: 0.716 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 217377MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691936284978,"sku":"217377MSC","price":41.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/94ee77dad00547d98ed0becb32696267_e4dc3c41-ce25-427c-8a12-f2121a3fd7ae.jpg?v=1788291205","url":"https:\/\/voomisupply.com\/products\/value-collection-217377msc-carriage-bolt-5-8-11-8-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}