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The PRO-SOURCE 401-5-62 is a self-insulated MIG welder nozzle designed for wire electrodes with an outside diameter ranging from 0.03 inches to 0.625 inches. The self-insulating construction reduces spatter buildup and helps maintain a clean gas flow path around the weld puddle. At 0.258 pounds and compact dimensions of approximately 3.01 inches in length and 1.06 inches in width, this nozzle is a practical replacement component for MIG welding guns used in fabrication, maintenance, and repair applications. It is installed by welders and metal fabrication technicians as part of routine consumable replacement.
This nozzle is suited for MIG welding setups where wire outside diameter falls within the 0.03 to 0.625 inch range. It is commonly used in light industrial, shop, and field repair environments. The self-insulated design is appropriate for both solid wire and flux-core wire processes where nozzle-to-contact-tip insulation is required to prevent arc-out at the nozzle body. Technicians working in metal fabrication, structural repair, or general manufacturing will find this a standard consumable replacement item.
Designed as a replacement MIG welder nozzle for welding guns accepting wire outside diameters from 0.03 inches to 0.625 inches. Verify gun thread type and nozzle seat style against your existing equipment before ordering.
Installation is performed by qualified welders or welding equipment technicians. Always disconnect the welding gun from the power source and allow the gun body to cool completely before removing or installing nozzle components. Use appropriate nozzle pliers or a nozzle removal tool to avoid damaging the contact tip or diffuser during replacement. Inspect the contact tip and gas diffuser for wear at the same time as nozzle replacement.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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