{"product_id":"value-collection-39312-hex-head-cap-screw-1-4-28-x-3-in-grade-8","title":"Value Collection 39312 Hex Head Cap Screw 1\/4-28 X 3 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 39312 is a 1\/4-28 UNF hex head cap screw engineered for high-strength fastening applications. Built from Grade 8 steel with a zinc yellow dichromate finish, this screw delivers superior tensile strength and corrosion resistance compared to lower-grade hardware. The partial threading design is standard for longer fasteners, allowing the unthreaded shank to bear shear loads while the threaded section engages the nut or tapped hole. At 3 inches in length under head and measuring 1\/4-28 thread pitch, this screw meets ASME B18.2.1 dimensional standards. Sold in a pack of 50, it suits production environments and contractors who require consistent, spec-grade hardware on hand.\u003c\/p\u003e\n\u003cp\u003eThis fastener is used across a wide range of trade applications including HVAC equipment assembly, mechanical brackets, electrical enclosure mounting, and general structural fastening in both residential and commercial settings. The 1\/4-28 UNF thread is common in precision mechanical assemblies where fine thread engagement and vibration resistance are required. Grade 8 hardware is typically specified by engineers and tradespeople when a SAE Grade 5 fastener does not meet the load requirements of the joint.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 steel construction for high tensile and proof load strength\u003c\/li\u003e\n  \u003cli\u003e1\/4-28 UNF thread standard for fine-pitch, vibration-resistant engagement\u003c\/li\u003e\n  \u003cli\u003e3-inch length under head with partial threading for shear load capability\u003c\/li\u003e\n  \u003cli\u003eZinc yellow dichromate finish provides corrosion and oxidation resistance\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.2.1 dimensional standards\u003c\/li\u003e\n  \u003cli\u003eSold in a 50-piece pack to support job-site and production quantities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/4-28 UNF hex head cap screw per ASME B18.2.1, compatible with any application calling for a Grade 8 partially threaded fastener in that thread size and length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a standard hex wrench or socket set sized to the 1\/4-inch hex head. Follow the joint designer's torque specification for Grade 8 fasteners in the applicable material; do not apply torque values from lower-grade fastener charts. Ensure the mating thread or nut is also rated to Grade 8 or higher to avoid fastener yielding. Avoid reusing fasteners that have been torqued to yield or show thread damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Yellow Dichromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensional Standard\u003c\/strong\u003e: ASME B18.2.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 50 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: 39312\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51717464883506,"sku":"39312","price":32.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fb7967101f3aa841b5b2105604baa7c0.jpg?v=1788540895","url":"https:\/\/voomisupply.com\/products\/value-collection-39312-hex-head-cap-screw-1-4-28-x-3-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}