{"product_id":"tweco-1230-1221-mig-nozzle-5-8-in-bore-450a-2-pack","title":"Tweco 1230-1221 Mig Nozzle 5\/8 in Bore 450A 2 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe TWECO 1230-1221 is a heavy-duty MIG welding nozzle designed for use with standard gas diffusers in high-amperage welding applications. Built to handle up to 450 amps, this nozzle features a 5\/8-inch (0.625-inch) bore and an overall length of 3.219 inches with a 0.97-inch outer diameter. It uses a 9\/16-inch-18 UNC-2B thread and is constructed in a three-piece configuration: a copper alloy nozzle housing, a solid brass machined nozzle insert, and a silicone nozzle insulator. The part number is rolled-stamped on the outer surface for fast identification in the field. Sold as a pack of 2.\u003c\/p\u003e\u003cp\u003eThis nozzle is suited for heavy-duty MIG welding operations in industrial, fabrication, and structural welding environments where sustained high-amperage output is required. The 0.125-inch to 0.156-inch recess contact tip relationship supports consistent arc performance. The three-piece design eliminates the need for a separate external insulator, keeping the torch assembly compact. It threads directly onto the conductor tube assembly, making it a practical replacement for worn or damaged nozzles on compatible TWECO-style torches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRated up to 450 amps for sustained heavy-duty welding cycles\u003c\/li\u003e\n\u003cli\u003e5\/8-inch bore with 3.219-inch length and 0.97-inch outer diameter\u003c\/li\u003e\n\u003cli\u003eNozzle housing cut and formed from copper alloy tubing for heat resistance\u003c\/li\u003e\n\u003cli\u003eNozzle insert machined from solid brass with internal threads matched to conductor tube OD threads\u003c\/li\u003e\n\u003cli\u003eSilicone nozzle insulator provides electrical insulation from the gas diffuser without an additional insulator component\u003c\/li\u003e\n\u003cli\u003ePart number rolled-stamped on outer surface for easy field identification\u003c\/li\u003e\n\u003cli\u003eSold as 2 per pack\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard gas diffusers; compatible with TWECO Weldskill 23 Series torch assemblies as stated by the manufacturer. Thread size is 9\/16-inch-18 UNC-2B.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and replacement of MIG welding nozzles is performed by qualified welding technicians or maintenance personnel. Always disconnect the torch from the power source and allow all components to cool completely before handling. Thread the nozzle onto the conductor tube assembly by hand to avoid cross-threading, then snug firmly. Inspect the nozzle insulator and insert for wear at each replacement interval to maintain proper gas coverage and arc stability.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size\u003c\/strong\u003e: 0.625 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\u003eOuter Diameter\u003c\/strong\u003e: 0.97 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Amperage\u003c\/strong\u003e: 450 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-inch-18 UNC-2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Tip Recess\u003c\/strong\u003e: 0.125 to 0.156 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Material\u003c\/strong\u003e: Copper alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulator Material\u003c\/strong\u003e: Silicone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 2 per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.35 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: TWECO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1230-1221\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TWECO","offers":[{"title":"Default Title","offer_id":51342874509618,"sku":"1230-1221","price":77.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310545907.jpg?v=1782009220","url":"https:\/\/voomisupply.com\/products\/tweco-1230-1221-mig-nozzle-5-8-in-bore-450a-2-pack","provider":"Voomi Supply","version":"1.0","type":"link"}