{"product_id":"national-hardware-n140-681-steel-square-corner-hinge-4x4-in","title":"National Hardware N140-681 Steel Square Corner Hinge 4x4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NATIONAL HARDWARE N140-681 is a square corner residential door hinge constructed from steel with a zinc plated finish. Measuring 4 inches wide by 4 inches high, it is built for standard residential door applications where a clean, 90-degree corner profile is required. The hinge features a 5-knuckle design and carries a load capacity of 70 pounds, making it appropriate for interior and exterior residential doors of typical weight. Licensed contractors, carpenters, and general construction trades install this type of hardware during new construction, renovation, or replacement work.\u003c\/p\u003e\u003cp\u003eThis hinge is suited for residential door installations where square corner mortise hinges are specified. Common applications include interior passage doors, bedroom doors, closet doors, and light exterior doors in single-family and multi-family residential settings. The zinc plated finish provides a baseline level of corrosion resistance for interior use. It is sold individually but carries a minimum order quantity of 5 units, making it practical for contractors stocking hardware for multiple doors on a job site.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4 inches wide by 4 inches high square corner hinge profile\u003c\/li\u003e\n\u003cli\u003eSteel construction for durability in residential door applications\u003c\/li\u003e\n\u003cli\u003eZinc plated finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003e5-knuckle design for smooth pivot action\u003c\/li\u003e\n\u003cli\u003e70-pound load capacity suitable for standard residential doors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation hinge for standard residential doors requiring a 4-inch square corner mortise hinge.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by carpenters, finish contractors, or general trades using a chisel and drill for mortise preparation. Power down any electronic door hardware or access control systems before beginning work. Ensure the mortise depth matches the hinge leaf thickness to achieve a flush fit. Follow applicable local building codes for door hardware specifications on fire-rated or egress doors.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Shape\u003c\/strong\u003e: Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Knuckles\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Capacity\u003c\/strong\u003e: 70 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.639 pounds\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: 5\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: NATIONAL HARDWARE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: N140-681\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STANLEY","offers":[{"title":"Default Title","offer_id":51711816401202,"sku":"N140-681","price":62.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ef61f519c2019eb57a6501154125e08d.jpg?v=1788479953","url":"https:\/\/voomisupply.com\/products\/national-hardware-n140-681-steel-square-corner-hinge-4x4-in","provider":"Voomi Supply","version":"1.0","type":"link"}