{"product_id":"esab-633985-mig-nozzle-3-4-inch-bore-st-16-st-21","title":"Esab 633985 Mig Nozzle 3\/4 Inch Bore ST-16 ST-21","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ESAB 633985 is a Size 12 MIG nozzle with a 3\/4-inch bore diameter, designed for use with water-cooled MIG welding guns. The nozzle directs shielding gas flow around the weld pool, helping to protect the arc from atmospheric contamination during the welding process. Its bore geometry is matched to the gas diffuser and contact tip arrangement standard on the ST-16 and ST-21 gun platforms. Licensed welding technicians and professional fabricators install this nozzle as a routine consumable replacement during MIG welding operations.\u003c\/p\u003e\u003cp\u003eThis nozzle is suited for water-cooled MIG gun applications in both production and maintenance welding environments. The ST-16 and ST-21 are water-cooled guns commonly deployed on higher-amperage MIG processes where air-cooled equipment would overheat. The 3\/4-inch bore supports adequate shielding gas coverage across a range of wire diameters and joint configurations typical in structural, fabrication, and industrial welding work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/4-inch bore diameter for consistent shielding gas coverage\u003c\/li\u003e\n\u003cli\u003eSize 12 nozzle designation matches ST-16 and ST-21 gun geometry\u003c\/li\u003e\n\u003cli\u003eDesigned for water-cooled MIG gun platforms operating at higher duty cycles\u003c\/li\u003e\n\u003cli\u003eSold as individual unit for straightforward consumable replenishment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with the ST-16 and ST-21 water-cooled MIG guns as stated by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMIG nozzle replacement is performed by welding technicians as part of routine gun maintenance. Before replacing the nozzle, disconnect the welding machine from its power source and allow the water-cooled gun to depressurize and cool. Inspect the gas diffuser and contact tip for wear while the nozzle is removed. Follow applicable AWS and shop safety procedures when servicing welding consumables.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNozzle Size\u003c\/strong\u003e: 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.17 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 1.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 6.05 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 3.95 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 662067019229\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ESAB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 633985\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ESAB","offers":[{"title":"Default Title","offer_id":51346547212594,"sku":"633985","price":96.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310497179.jpg?v=1782083439","url":"https:\/\/voomisupply.com\/products\/esab-633985-mig-nozzle-3-4-inch-bore-st-16-st-21","provider":"Voomi Supply","version":"1.0","type":"link"}