{"product_id":"tweco-1230-1102-mig-nozzle-3-8-inch-bore-450-amp","title":"Tweco 1230-1102 Mig Nozzle 3\/8 Inch Bore 450 Amp","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe TWECO 1230-1102 is a self-insulated MIG welding nozzle built for heavy-duty applications up to 450 amps. It features a 0.375-inch bore, a 3.11-inch overall length, and a 0.75-inch outer diameter. The three-piece construction includes a nozzle housing cut and formed from 122 DHP copper alloy tubing, a nozzle insert machined from solid brass, and a nozzle insulator made from G7 silicone material. The silicone insulator provides the required electrical isolation from the gas diffuser without the need for a separate add-on insulator. The part number is rolled-stamped on the outer surface for quick field identification. Licensed welders and MIG technicians use this nozzle in production and maintenance welding environments.\u003c\/p\u003e\u003cp\u003eThe 1230-1102 is designed for use with Tweco No. 3 MIG guns rated up to 450 amps. It is suited for heavy-duty welding applications where higher amperage and longer electrical stick-out are common. The flush contact tip relationship of 0.062 inches accommodates setups where the tip is positioned closer to the workpiece. The nozzle threads include a 9\/16-inch-18 UNC-2B thread size that interfaces with the conductor tube assembly. This nozzle is sold in a minimum quantity of 2 per pack, making it practical for shops stocking spares or running multiple guns on a shift.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.375-inch bore and 3.11-inch length for standard gas diffuser fitment on No. 3 MIG guns\u003c\/li\u003e\n\u003cli\u003eRated up to 450 amps for heavy-duty welding service\u003c\/li\u003e\n\u003cli\u003eNozzle housing formed from 122 DHP copper alloy tubing for high thermal conductivity\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\u003eG7 silicone nozzle insulator provides electrical isolation from the gas diffuser without an additional separate insulator\u003c\/li\u003e\n\u003cli\u003ePart number rolled-stamped on outer surface for fast identification in the field\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Tweco No. 3 MIG guns rated up to 450 amps using a standard gas diffuser. The 9\/16-inch-18 UNC-2B thread engages the conductor tube assembly directly.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and replacement of MIG nozzles should be performed by a qualified welder or welding technician. Always de-energize and allow the MIG gun to cool before removing or installing the nozzle. Thread the nozzle onto the conductor tube by hand first to avoid cross-threading, then snug with an appropriate wrench. Inspect the silicone insulator for damage during each nozzle change, as a compromised insulator can result in unwanted arc contact with the diffuser.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.11 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 0.75 inches\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\u003eFlush Contact Tip Relationship\u003c\/strong\u003e: 0.062 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 450 amps\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 Quantity\u003c\/strong\u003e: 2 per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: 1230-1102\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TWECO","offers":[{"title":"Default Title","offer_id":51345323360562,"sku":"1230-1102","price":101.15,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310545921.jpg?v=1782054707","url":"https:\/\/voomisupply.com\/products\/tweco-1230-1102-mig-nozzle-3-8-inch-bore-450-amp","provider":"Voomi Supply","version":"1.0","type":"link"}