{"product_id":"electro-hardware-es-0518-1-round-head-clinch-nut-5-16-18","title":"Electro Hardware ES-0518-1 Round Head Clinch Nut 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ELECTRO HARDWARE ES-0518-1 is a round head clinch captive nut designed to be permanently installed into sheet metal panels and enclosures. Once pressed into a punched mounting hole, the clinch nut displaces material in the host panel to create a flush, torque-resistant threaded anchor point. The 5\/16-18 UNC thread accepts standard fasteners used throughout electrical enclosure, HVAC cabinet, and light structural assembly work. Made from zinc plated steel, the part resists corrosion in indoor and light-duty environments. The 0.5-inch head diameter and 0.413-inch mounting hole requirement make this a straightforward drop-in during fabrication or field repair of thin-gauge steel panels.\u003c\/p\u003e\u003cp\u003eThis clinch captive nut is suited for sheet metal assemblies where a permanent threaded insert is needed on panels as thin as 0.056 inches. Typical applications include electrical panel enclosures, HVAC equipment cabinets, control boxes, and light structural subassemblies where a weld nut or PEM-style fastener is needed without welding equipment. It is installed during fabrication or in the field by sheet metal workers, HVAC technicians, and electricians who need a reliable threaded anchor point in thin-gauge material.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread for broad fastener compatibility across trade applications\u003c\/li\u003e\n\u003cli\u003eClinch-style installation requires no welding and works with standard arbor or hydraulic press tooling\u003c\/li\u003e\n\u003cli\u003eMinimum panel thickness of 0.056 inches accommodates thin-gauge sheet metal enclosures\u003c\/li\u003e\n\u003cli\u003eRound head profile with 0.5-inch head diameter distributes clamp load across the panel surface\u003c\/li\u003e\n\u003cli\u003eZinc plated steel construction provides corrosion resistance for indoor and protected environments\u003c\/li\u003e\n\u003cli\u003eHead height of 0.23 inches keeps the installed profile low in tight clearance assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation clinch captive nut for sheet metal panels and enclosures requiring a 5\/16-18 threaded insert with a 0.413-inch mounting hole diameter and a minimum panel thickness of 0.056 inches.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a properly sized punch or drill to produce a 0.413-inch mounting hole before pressing the nut into the panel. A bench press, arbor press, or hydraulic press with the correct anvil is the standard tool for clinching; do not attempt to install by hammer strike, as this can deform the head or damage the thread. Verify that the host panel meets the 0.056-inch minimum thickness specification before pressing to ensure adequate material displacement and pull-out resistance. Disconnect and de-energize any panel or enclosure before performing fastener installation work on live equipment.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: Clinch Captive Nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.23 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Diameter\u003c\/strong\u003e: 0.412 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hole Diameter\u003c\/strong\u003e: 0.413 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Panel Thickness\u003c\/strong\u003e: 0.056 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\u003ePackage Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161706\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ELECTRO HARDWARE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ES-0518-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ELECTRO HARDWARE","offers":[{"title":"Default Title","offer_id":51739721335090,"sku":"ES-0518-1","price":19.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2adbb570005f3ed4b8b5c26cb753351d_0c3e7267-0fa3-4b7e-816f-aadfe1b2dc46.jpg?v=1788818212","url":"https:\/\/voomisupply.com\/products\/electro-hardware-es-0518-1-round-head-clinch-nut-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}