{"product_id":"value-collection-d39155-hex-cap-screw-5-8-11-x-3-5-in-grade-8","title":"Value Collection D39155 Hex Cap Screw 5\/8-11 X 3.5 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Value Collection D39155 is a partially threaded hex head cap screw designed for high-strength mechanical fastening applications. Built to ASME B18.2.1 standards, this fastener features a 5\/8-11 UNC thread size and measures 3.5 inches under the head. It is manufactured from Grade 8 steel, which delivers the elevated tensile and proof load strength required in heavy-duty bolted assemblies. The zinc yellow dichromate finish provides a layer of corrosion resistance suitable for general industrial and structural use. Machinists, millwrights, and maintenance technicians commonly use this fastener in equipment assembly, structural connections, and machinery repair.\u003c\/p\u003e\u003cp\u003eThis cap screw is suited for applications where a partially threaded shank is required to provide a bearing surface in the bolt hole or to resist shear loads. Typical installations include structural steel connections, heavy equipment frames, conveyor systems, and industrial machinery assemblies where Grade 8 strength ratings are specified by engineering or OEM requirements. The UNC thread form is the standard for inch-system fasteners in North American trade and industrial use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGrade 8 steel construction meets high tensile strength requirements for demanding bolted joints\u003c\/li\u003e\n\u003cli\u003ePartially threaded shank provides a precise bearing surface and improved shear resistance\u003c\/li\u003e\n\u003cli\u003e5\/8-11 UNC thread size — standard coarse thread for inch-system assemblies\u003c\/li\u003e\n\u003cli\u003eZinc yellow dichromate finish for corrosion resistance in general service environments\u003c\/li\u003e\n\u003cli\u003eConforms to ASME B18.2.1 for dimensional accuracy and consistency\u003c\/li\u003e\n\u003cli\u003e3.5-inch length under head accommodates thicker material stacks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard ASME B18.2.1 inch-series hex head cap screw suitable for use with any 5\/8-11 UNC tapped hole or matching hex nut in Grade 8 or lower strength applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified mechanic, millwright, or maintenance technician familiar with proper fastener torque procedures for Grade 8 hardware. Always clean threads and mating surfaces before installation, and use a calibrated torque wrench to achieve the specified clamp load per engineering requirements. Do not substitute Grade 8 fasteners into joints specified for higher-grade or metric hardware without engineering approval. Inspect the fastener and mating threads for damage before assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-11 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3.5 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 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Yellow Dichromate\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: UNC\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: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: D39155\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51696334176562,"sku":"D39155","price":22.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2f19a68728c6b2b6e5829bef66e07327.jpg?v=1788341590","url":"https:\/\/voomisupply.com\/products\/value-collection-d39155-hex-cap-screw-5-8-11-x-3-5-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}