{"product_id":"value-collection-218378msc-carriage-bolt-3-4-10-8-in-grade-8","title":"Value Collection 218378MSC Carriage Bolt 3\/4-10 8 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 218378MSC is a fully threaded carriage bolt designed for high-strength fastening applications in structural, mechanical, and industrial assemblies. Manufactured from Grade 8 alloy steel with a bright uncoated finish, this bolt delivers the tensile strength required for demanding load-bearing connections. The 3\/4-10 UNC thread runs the full 8-inch length under head, making it suitable for through-bolt applications where grip length must span thick material stacks. Licensed electricians, millwrights, structural ironworkers, and mechanical contractors regularly specify Grade 8 carriage bolts for steel-to-steel and steel-to-wood connections where SAE J429 compliance is required.\u003c\/p\u003e\n\u003cp\u003eThis carriage bolt is suited for use in residential and commercial structural framing, equipment mounting, conveyor systems, and heavy-duty jig and fixture fabrication. The square neck under the round dome head resists rotation during nut tightening, eliminating the need for a wrench on the bolt side. At 8 inches in length under head with a 3\/4-10 UNC thread, it accommodates thick sandwich assemblies or extended through-bolt configurations common in steel framing and machinery bases.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction meets SAE J429 for high tensile and proof load strength\u003c\/li\u003e\n  \u003cli\u003eFully threaded 8-inch length under head allows maximum grip adjustment\u003c\/li\u003e\n  \u003cli\u003e3\/4-10 UNC thread standard ensures broad nut and hardware compatibility\u003c\/li\u003e\n  \u003cli\u003eSquare neck locks into material during installation, preventing bolt spin without a second tool\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish suitable for indoor or protected environments where coating is applied after assembly\u003c\/li\u003e\n  \u003cli\u003eSingle-piece packaging (Pkg Qty: 1) for job-site or MRO single-unit replacement use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style and general-use replacement carriage bolt for any application requiring a 3\/4-10 UNC, 8-inch fully threaded fastener with a square neck and Grade 8 alloy steel rating per SAE J429.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by millwrights, structural ironworkers, or mechanical contractors using standard open-end, box, or impact wrenches sized for 3\/4-inch fasteners. Always power down or de-energize any mechanical system before replacing structural fasteners under load. Verify mating nut grade and thread class are compatible with Grade 8 hardware to avoid mismatched joint strength. Follow applicable structural or mechanical codes for torque procedure and joint inspection after installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/4-10\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: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\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: Bright \/ Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: SAE J429\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.05 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 218378MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51710600675634,"sku":"218378MSC","price":34.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/94ee77dad00547d98ed0becb32696267_ca2856f2-d1ca-4d67-a430-a9eb2309c62c.jpg?v=1788468603","url":"https:\/\/voomisupply.com\/products\/value-collection-218378msc-carriage-bolt-3-4-10-8-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}