{"product_id":"national-mfg-n830-427-round-corner-hinge-5-8-inch-black","title":"National Mfg N830-427 Round Corner Hinge 5\/8 Inch Black","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NATIONAL MFG\/SPECTRUM BRANDS HHI N830-427 is a full mortise door hinge built from heavy-gauge cold-rolled steel for reliable, long-term performance in demanding applications. It features a five-knuckle design with a 5\/8 inch radius round corner profile and a flush pin for a clean, finished appearance. Screw holes are countersunk to sit flush with the hinge leaf surface. The removable pin simplifies installation and future service. This hinge ships in a package of 15 units and is suited for interior door applications in residential and light commercial settings where a black finish and round corner geometry are required.\u003c\/p\u003e\u003cp\u003eThis hinge is a full mortise style, meaning it is set into routed recesses in both the door edge and the door frame. It is appropriate for standard interior doors in residential construction and remodel work. Carpenters, general contractors, and finish carpenters are the typical installers. The black finish and round corner geometry make it a common choice where consistent hardware aesthetics are required across multiple doors in a project.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHeavy-gauge cold-rolled steel construction for added strength and durability\u003c\/li\u003e\n\u003cli\u003eFive-knuckle design for smooth, stable pivot action\u003c\/li\u003e\n\u003cli\u003e5\/8 inch radius round corners for clean mortise fitment\u003c\/li\u003e\n\u003cli\u003eFlush pin delivers a finished, low-profile appearance\u003c\/li\u003e\n\u003cli\u003eCountersunk screw holes allow fasteners to sit flush with the hinge leaf\u003c\/li\u003e\n\u003cli\u003eRemovable pin for easier installation and future removal\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 full mortise interior door applications requiring a 5\/8 inch radius round corner profile in a black finish.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eFull mortise hinges require routed recesses in the door edge and door jamb sized to accept the hinge leaf thickness and dimensions. A licensed carpenter or experienced finish contractor should verify door prep dimensions before installation. Ensure the door is properly supported and the frame is plumb and square before setting hinges. Follow applicable local building codes for door hardware requirements on fire-rated or egress doors.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Style\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinge Type\u003c\/strong\u003e: Five Knuckle Full Mortise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Heavy-gauge cold-rolled steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Type\u003c\/strong\u003e: Removable flush pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Holes\u003c\/strong\u003e: Countersunk\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 15 per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.3 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: NATIONAL MFG\/SPECTRUM BRANDS HHI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: N830-427\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NATIONAL HARDWARE","offers":[{"title":"Default Title","offer_id":51558410322226,"sku":"N830-427","price":54.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/24da7635f52298e4101b0828a77d165b.jpg?v=1786411597","url":"https:\/\/voomisupply.com\/products\/national-mfg-n830-427-round-corner-hinge-5-8-inch-black","provider":"Voomi Supply","version":"1.0","type":"link"}