{"product_id":"holo-krome-720003964-hex-socket-cap-screw-1-8-unc","title":"Holo-krome 720003964 Hex Socket Cap Screw 1-8 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HOLO-KROME 720003964 is a partially threaded hex socket cap screw designed for high-strength fastening applications in industrial and mechanical assemblies. It features a 1-8 UNC thread size and a 9-inch length under head, making it suited for deep through-bolt and structural clamping applications. The alloy steel construction with a black oxide finish provides corrosion resistance and meets ASME B18.3 and ASTM A574 standards. The 3\/4-inch hex drive socket interface allows high torque application with standard hex keys or socket drivers used by maintenance technicians and industrial mechanics.\u003c\/p\u003e\u003cp\u003eThis cap screw is used in heavy-duty mechanical and structural assemblies where a recessed drive head and high clamp load are required. Typical applications include machinery frames, industrial equipment mounting, and fabricated steel structures. The partial threading engages the full clamping length efficiently while the unthreaded shank provides shear resistance in close-tolerance bores. It is commonly installed by millwrights, maintenance mechanics, and industrial assemblers working on equipment that demands high-tensile fasteners.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-8 UNC thread for compatibility with standard inch-series tapped holes\u003c\/li\u003e\n\u003cli\u003e9-inch length under head for deep fastening and long-grip applications\u003c\/li\u003e\n\u003cli\u003ePartially threaded shank provides shear resistance in precision bores\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 high-strength fastener requirements\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish offers moderate corrosion resistance and reduces light reflection\u003c\/li\u003e\n\u003cli\u003e3\/4-inch hex socket drive supports high-torque installation with standard tooling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a high-strength inch-series socket cap screw conforming to ASME B18.3 and ASTM A574 standards, suitable for use in any 1-8 UNC tapped hole requiring a socket head cap screw with a 9-inch grip length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by qualified mechanics or industrial assemblers using a calibrated torque wrench and a 3\/4-inch hex key or socket. De-energize and lock out all equipment before servicing any fastened assembly. Verify thread engagement depth and hole alignment before final torque. Do not substitute lubricants or thread compounds without confirming compatibility with the base material and torque specification for the application.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-8 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 9 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/4 inches\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: Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME B18.3, ASTM A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.24 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HOLO-KROME\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 720003964\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51740632940850,"sku":"720003964","price":81.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0641d68d4db91df3fb8dcf17ecb7bd9.jpg?v=1788826352","url":"https:\/\/voomisupply.com\/products\/holo-krome-720003964-hex-socket-cap-screw-1-8-unc","provider":"Voomi Supply","version":"1.0","type":"link"}