{"product_id":"tweco-1230-1120-mig-nozzle-5-8-inch-bore-450-amp-thread-on","title":"Tweco 1230-1120 Mig Nozzle 5\/8 Inch Bore 450 Amp Thread-on","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe TWECO 1230-1120 is a 23 Series self-insulated, thread-on MIG welding nozzle rated for use with up to 450-amp Tweco No. 3 MIG guns. It features a 5\/8-inch (0.625 inch) bore, a 0.875-inch outer diameter, and measures 3.219 inches in length. The nozzle strings directly into the conductor tube assembly. Construction is a 3-piece design: a nozzle housing cut and formed from 122 DHP copper alloy tubing, a nozzle insert machined from solid brass to match internal gas diffuser threads, and a G7 silicone nozzle insulator that provides the required electrical isolation from the gas diffuser. The part number is rolled-stamped on the outer surface for quick field identification. Sold as 2 per pack.\u003c\/p\u003e\n\u003cp\u003eThis nozzle is intended for heavy-duty MIG welding applications where output levels reach up to 450 amps. The recessed contact tip relationship of 0.125 to 0.156 inches makes it well suited for higher-heat passes, longer electrical stick-out requirements, tack welding, spot welding, stitch welding, and situations where the nozzle may contact the workpiece. The 9\/16-inch-18 UNC-2B thread size ensures positive engagement with compatible conductor tube assemblies. It is used by professional welders and fabricators in industrial and heavy manufacturing environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3-piece self-insulated design eliminates the need for a separate external insulator\u003c\/li\u003e\n  \u003cli\u003eNozzle housing formed from 122 DHP copper alloy tubing for high conductivity and heat resistance\u003c\/li\u003e\n  \u003cli\u003eNozzle insert machined from solid brass with internal threads matched to the gas diffuser\u003c\/li\u003e\n  \u003cli\u003eG7 silicone nozzle insulator provides durable electrical isolation from the gas diffuser\u003c\/li\u003e\n  \u003cli\u003eRecessed tip geometry supports longer stick-out, tack, spot, and stitch welding applications\u003c\/li\u003e\n  \u003cli\u003ePart number rolled-stamped on outer surface for fast identification in the field\u003c\/li\u003e\n  \u003cli\u003eThread-on attachment with 9\/16-inch-18 UNC-2B thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Tweco No. 3 MIG guns rated up to 450 amps. The nozzle threads into the conductor tube assembly and the insert is machined to match gas diffuser thread specifications for that platform.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by professional welders or maintenance technicians. Always power down the welding machine and allow front-end components to cool before removing or installing nozzle consumables. Thread the nozzle onto the conductor tube by hand until fully seated to avoid cross-threading the UNC-2B threads. Inspect the silicone insulator and brass insert for wear or heat damage at each consumable change to maintain proper electrical isolation and gas coverage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNozzle Length\u003c\/strong\u003e: 3.219 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Rating\u003c\/strong\u003e: 450 amps maximum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16 inches-18 UNC-2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Tip Relationship (Recess)\u003c\/strong\u003e: 0.125 to 0.156 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAttachment Type\u003c\/strong\u003e: Thread-on\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNozzle Housing Material\u003c\/strong\u003e: 122 DHP copper alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNozzle Insert Material\u003c\/strong\u003e: Solid brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNozzle Insulator Material\u003c\/strong\u003e: G7 silicone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.22 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: 2 per pack\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: TWECO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1230-1120\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TWECO","offers":[{"title":"Default Title","offer_id":51347988644146,"sku":"1230-1120","price":72.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310545950.jpg?v=1782117141","url":"https:\/\/voomisupply.com\/products\/tweco-1230-1120-mig-nozzle-5-8-inch-bore-450-amp-thread-on","provider":"Voomi Supply","version":"1.0","type":"link"}