{"product_id":"value-collection-31128ch2-hex-head-cap-screw-5-16-18-x-8-in","title":"Value Collection 31128CH2 Hex Head Cap Screw 5\/16-18 X 8 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 31128CH2 is a partially threaded hex head cap screw designed for general fastening applications across industrial, mechanical, and structural assemblies. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener measures 5\/16-18 thread size with an 8-inch length under the head. The Unified National Coarse (UNC) thread form provides reliable engagement in standard tapped holes and nuts. It is installed using a 1\/2-inch hex key or wrench and is suited for use by maintenance technicians, millwrights, plumbers, and general contractors who require a cost-effective, code-compliant fastener for moderate-load applications.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is appropriate for residential, commercial, and light industrial settings where a zinc-plated steel fastener meets the corrosion-resistance and strength requirements of the job. The Grade 2 designation makes it suitable for low-to-moderate tensile load applications such as equipment mounting, structural brackets, pipe supports, and general mechanical assemblies. The partial threading allows for a smooth shank section near the head, which is useful in joints requiring a clamping grip rather than full-thread engagement throughout the fastener body.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC thread form for compatibility with standard coarse-thread nuts and tapped holes\u003c\/li\u003e\n  \u003cli\u003e8-inch length under head with partial threading for shank-grip clamping joints\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction meets ASME B18.2.1 and SAE J429 standards\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish provides baseline corrosion resistance in dry to mildly humid environments\u003c\/li\u003e\n  \u003cli\u003e1\/2-inch hex drive for installation with standard wrenches or sockets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 5\/16-18 UNC coarse-thread nuts, washers, and tapped holes conforming to inch-measurement fastener standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation does not require special licensing but should follow applicable mechanical and structural codes for the application. Power down or de-energize any equipment before fastening components in electrical or mechanical assemblies. Use a properly sized 1\/2-inch wrench or socket to avoid rounding the hex head. Do not exceed the rated tensile and shear load limits for Grade 2 fasteners in high-stress or safety-critical structural connections.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\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 Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\u003c\/strong\u003e: Partially Threaded\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 Coating\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Key Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.179 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B18.2.1, SAE J429\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\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: 31128CH2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694166704434,"sku":"31128CH2","price":7056.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cf8cab0b5d7da5655ef4d63cba0f619e.jpg?v=1788321157","url":"https:\/\/voomisupply.com\/products\/value-collection-31128ch2-hex-head-cap-screw-5-16-18-x-8-in","provider":"Voomi Supply","version":"1.0","type":"link"}