{"product_id":"southwire-489-3-1-2-inch-male-clamp-back","title":"Southwire 489 3-1\/2 Inch Male Clamp Back","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWIRE 489 is a 3-1\/2 inch male clamp back fitting designed for use in electrical conduit installations. This type of fitting secures conduit to enclosures, panels, or junction boxes by clamping around the conduit body and threading into a knockout opening. Licensed electricians and experienced electrical contractors install this hardware as part of standard raceway assemblies in commercial and residential wiring systems. At 14 pounds, this is a bulk or multi-unit package suited for job-site supply stocking.\u003c\/p\u003e\n\u003cp\u003eThis male clamp back is sized at 3-1\/2 inches, making it appropriate for larger conduit runs typically found in commercial electrical distribution, industrial panel feeds, and heavy-duty branch circuit installations. It is used where a secure, mechanically sound conduit connection to an enclosure is required. The clamp-back design provides a reliable grip on the conduit without requiring adhesives or additional hardware beyond standard installation practice.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3-1\/2 inch male clamp back configuration for large-diameter conduit connections\u003c\/li\u003e\n  \u003cli\u003eMale threading allows direct engagement with standard knockout openings on enclosures and panels\u003c\/li\u003e\n  \u003cli\u003eClamp-back design mechanically secures conduit without additional fasteners\u003c\/li\u003e\n  \u003cli\u003eBulk package weight of 14 pounds suitable for stocking on active job sites\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard supply fitting for 3-1\/2 inch conduit systems in commercial and industrial electrical installations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize all circuits and lock out the panel before making any connections at an enclosure or junction box. Ensure the knockout opening matches the 3-1\/2 inch fitting size before installation. Use appropriate conduit wrenches to achieve a secure, rattle-free connection without over-tightening and damaging the fitting threads.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 3-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Male Clamp Back\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 14 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 75133814590\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: SOUTHWIRE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 489\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWIRE","offers":[{"title":"Default Title","offer_id":51383711400242,"sku":"489","price":16.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312675576.jpg?v=1782605165","url":"https:\/\/voomisupply.com\/products\/southwire-489-3-1-2-inch-male-clamp-back","provider":"Voomi Supply","version":"1.0","type":"link"}