{"product_id":"value-collection-39211-hex-head-cap-screw-7-8-9-x-9-in-grade-8","title":"Value Collection 39211 Hex Head Cap Screw 7\/8-9 X 9 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 39211 is a partially threaded hex head cap screw in the 7\/8-9 UNC thread size with a 9-inch length under head. Manufactured from Grade 8 steel and finished with a zinc yellow dichromate coating, this fastener delivers high tensile strength and corrosion resistance suited to heavy-duty mechanical and structural applications. It conforms to ASME B18.2.1 dimensional standards, ensuring consistent fit across standard tooling and assembly hardware. Sold in a package of 2, this screw is a practical choice for maintenance, fabrication, and repair operations requiring large-diameter, high-strength fasteners.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is used in industrial machinery assembly, structural steel fabrication, heavy equipment maintenance, and general mechanical applications where high-strength inch-series fasteners are required. The partial thread design allows for precise clamping without thread engagement across the full grip length, making it well suited for through-bolt and joint applications where a smooth shank section is preferred. It is appropriate for both shop and field installation by millwrights, ironworkers, mechanics, and maintenance technicians.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 steel construction provides high tensile and proof load strength for demanding applications\u003c\/li\u003e\n  \u003cli\u003eZinc yellow dichromate finish offers corrosion resistance and surface protection\u003c\/li\u003e\n  \u003cli\u003ePartial threading allows smooth shank engagement for proper joint clamping\u003c\/li\u003e\n  \u003cli\u003e7\/8-9 UNC thread ensures compatibility with standard inch-series nuts and tapped holes\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.2.1 for dimensional accuracy and interchangeability\u003c\/li\u003e\n  \u003cli\u003ePackage quantity of 2 supports small-quantity maintenance and repair needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 7\/8-9 UNC inch-series hex nuts, flat washers, and tapped holes conforming to ASME B18.2.1 dimensional requirements.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified mechanics, millwrights, or maintenance technicians using standard hex wrenches or impact tooling sized for a 7\/8-9 fastener. Always verify that the mating nut or tapped hole thread class is compatible before installation. Follow applicable torque specifications from the equipment manufacturer or relevant structural standards. De-energize or isolate any equipment before fastener replacement on live machinery.\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\u003eLength Under Head\u003c\/strong\u003e: 9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\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 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Yellow Dichromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ASME B18.2.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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: 39211\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697753424178,"sku":"39211","price":39.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/320f62f1492cc289880b8ad38f4b8af3.jpg?v=1788354247","url":"https:\/\/voomisupply.com\/products\/value-collection-39211-hex-head-cap-screw-7-8-9-x-9-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}