{"product_id":"value-collection-hci20870450g-hex-head-bolt-7-8-9-grade-2","title":"Value Collection HCI20870450G Hex Head Bolt 7\/8-9 Grade 2","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION HCI20870450G is a 7\/8-9 UNC hex head bolt designed for general structural and mechanical fastening applications. This bolt measures 4-1\/2 inches in length under head and is manufactured from Grade 2 steel with a hot-dipped galvanized finish that provides corrosion resistance in exposed or outdoor environments. It is partially threaded, which is standard for bolts of this length and thread size, allowing the unthreaded shank to carry shear loads. The bolt conforms to ASTM A307, a widely recognized standard for low-carbon steel bolts used in general-purpose structural connections. Installation is typically performed by ironworkers, millwrights, plumbers, or general contractors depending on application.\u003c\/p\u003e\n\u003cp\u003eThis bolt is suited for residential and commercial construction, equipment mounting, structural steel connections, HVAC equipment bases, pipe support structures, and similar general-purpose fastening tasks. Its hot-dipped galvanized coating makes it appropriate for outdoor, wet, or moderately corrosive environments where an uncoated fastener would be prone to rust. The 7\/8-9 UNC thread is a common heavy-fastener size found across structural, mechanical, and trade applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8-9 UNC thread for compatibility with standard heavy-duty nuts and tapped holes\u003c\/li\u003e\n  \u003cli\u003e4-1\/2 inches length under head for use in thick-stack or deep-clearance connections\u003c\/li\u003e\n  \u003cli\u003eHot-dipped galvanized finish for corrosion resistance in outdoor or wet environments\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank distributes shear loads along the unthreaded body\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel meets ASTM A307 for general structural fastening requirements\u003c\/li\u003e\n  \u003cli\u003eInch measurement system for use with standard imperial tooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose replacement or new-installation fastener compatible with 7\/8-9 UNC nuts, washers, and threaded connections in structural and mechanical assemblies conforming to ASTM A307 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall using a standard impact wrench or combination wrench sized for 7\/8-9 hex fasteners. Follow applicable torque specifications from the equipment manufacturer or structural engineer of record, as ASTM A307 does not prescribe a single installation torque. Always use a properly rated flat washer and nut to distribute clamping load. Inspect the galvanized coating for damage before installation and apply cold galvanizing compound to any exposed areas if required by project specifications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-9\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: 4-1\/2 inches\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: Hot-Dipped Galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Style\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\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: 1 pound\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: HCI20870450G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697392156978,"sku":"HCI20870450G","price":18.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/efd35edbdb3a25faa41c1b86b78a4016.jpg?v=1788351210","url":"https:\/\/voomisupply.com\/products\/value-collection-hci20870450g-hex-head-bolt-7-8-9-grade-2","provider":"Voomi Supply","version":"1.0","type":"link"}