{"product_id":"value-collection-217218msc-carriage-bolt-5-8-11-4-in-grade-8","title":"Value Collection 217218MSC Carriage Bolt 5\/8-11 4 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 217218MSC is a fully threaded carriage bolt designed for high-strength fastening applications in industrial, structural, and mechanical assemblies. It features a 5\/8-11 UNC thread size with a 4-inch length under head, a square neck that locks against the work surface to prevent rotation during installation, and a Grade 8 alloy steel construction rated for demanding load conditions. The uncoated, bright finish makes it suitable for applications where surface treatments will be applied after assembly or where coating is not required. This bolt is manufactured to SAE J429 standards, confirming material and mechanical property compliance.\u003c\/p\u003e\n\u003cp\u003eThis carriage bolt is used in structural connections, equipment fabrication, heavy machinery assembly, and maintenance applications requiring a flush, round-head fastener with no external drive. The square neck under the domed head bites into the mating material to resist torque during nut tightening. It is commonly installed by millwrights, ironworkers, maintenance technicians, and general contractors working with metal or heavy timber framing. Single-piece packaging makes it available for one-off replacements or small-batch repairs.\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 capacity\u003c\/li\u003e\n  \u003cli\u003e5\/8-11 UNC thread standard ensures broad nut and hardware compatibility\u003c\/li\u003e\n  \u003cli\u003eFully threaded shank along the full 4-inch length under head\u003c\/li\u003e\n  \u003cli\u003eSquare neck under domed head resists rotation without a wrench or driver on the bolt end\u003c\/li\u003e\n  \u003cli\u003eUncoated bright finish suitable for post-assembly coating or bare steel applications\u003c\/li\u003e\n  \u003cli\u003eManufactured to SAE J429 fastener standard for verified mechanical properties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 5\/8-11 UNC fully threaded carriage bolt for use with any 5\/8-inch heavy hex or standard hex nut and compatible structural hardware meeting SAE J429 Grade 8 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by qualified tradespeople familiar with structural fastening torque requirements for Grade 8 hardware. Insert the bolt through a pre-drilled hole sized to engage the square neck, then thread the nut from the opposite side and tighten with a standard wrench or impact tool. Do not apply heat to alter the bolt geometry or mechanical grade. Consult applicable structural or mechanical codes for required torque values and joint design requirements specific to your application.\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\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: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\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: Uncoated \/ Bright\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\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: 0.3621 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: 217218MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693627867442,"sku":"217218MSC","price":15.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/94ee77dad00547d98ed0becb32696267_e3cfdcc4-e217-4ed6-8557-96191ce3092e.jpg?v=1788315173","url":"https:\/\/voomisupply.com\/products\/value-collection-217218msc-carriage-bolt-5-8-11-4-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}