{"product_id":"holo-krome-72344-hex-socket-cap-screw-7-8-9-unc-alloy-steel","title":"Holo-krome 72344 Hex Socket Cap Screw 7\/8-9 Unc Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 72344 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. It features a 7\/8-9 UNC thread and a 2-3\/4 inch length under head, with full threading along the entire shank. The drive is a 3\/4 inch internal hex socket, requiring an Allen or hex key for installation. Constructed from alloy steel with a black oxide coating, this fastener delivers strong tensile performance and moderate corrosion resistance. It is a standard choice for machinists, maintenance technicians, and industrial assembly professionals working to ASME B18.3 and ASTM A574 specifications.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for use in heavy equipment, machine frames, jigs, fixtures, and structural steel assemblies where a high-torque, recessed-drive fastener is required. The 7\/8-9 UNC coarse thread provides reliable engagement in steel and iron tapped holes. Full threading along the body makes it appropriate for through-bolting applications or for use with a nut across the full grip length. It is commonly installed by millwrights, machinists, and maintenance mechanics in industrial and manufacturing environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8-9 UNC coarse thread for reliable engagement in standard tapped steel and iron holes\u003c\/li\u003e\n  \u003cli\u003e2-3\/4 inch length under head with full threading along the entire shank\u003c\/li\u003e\n  \u003cli\u003e3\/4 inch internal hex socket drive for high-torque installation with an Allen key or hex driver\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 high-strength fastener requirements\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides mild corrosion resistance and reduces light reflection in service\u003c\/li\u003e\n  \u003cli\u003eManufactured to ASME B18.3 dimensional standards for consistent fit and interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit fastener for applications requiring a 7\/8-9 UNC hex socket cap screw per ASME B18.3 and ASTM A574 standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, millwrights, or maintenance mechanics using a 3\/4 inch hex key or Allen driver. Ensure the tapped hole or nut is clean and free of debris before threading. De-energize and lock out all equipment before installing or removing fasteners in powered machinery. Do not substitute a mismatched drive size, as rounding the socket will damage the fastener head and complicate removal.\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 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 2-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully Threaded\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\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\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\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: HOLO-KROME\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 72344\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51743280038194,"sku":"72344","price":23.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/549f59e97b8135df9bba2ec164316ccb.jpg?v=1788844982","url":"https:\/\/voomisupply.com\/products\/holo-krome-72344-hex-socket-cap-screw-7-8-9-unc-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}