P401-6-62 - Parker Heavy Duty MIG Nozzle 5/8 Inch Recessed for Tweco #4

High-Performance Parker P401-6-62 MIG Nozzle

The Parker P401-6-62 is a premium heavy-duty MIG nozzle designed to meet the rigorous demands of industrial welding. Engineered by Parker Torchology, this consumable is a direct replacement for the industry-standard Tweco 401-6-62 nozzle, making it an essential component for welders using Tweco #4 style MIG guns (400 Amp series). The nozzle features a 5/8-inch (16mm) bore, which is the standard size for general-purpose fabrication, providing a balanced shield of gas around the weld pool to prevent porosity and oxidation.

One of the defining features of this nozzle is its recessed tip design. By positioning the contact tip slightly back inside the nozzle, the P401-6-62 offers enhanced protection against spatter buildup bridging the gap between the tip and the nozzle wall. This design is particularly beneficial in higher amperage applications where spatter generation can be significant. The recess also helps prevent the contact tip from shorting out against the workpiece when welding in tight corners or complex geometries, thereby extending the life of your consumables and reducing downtime.

Constructed from high-quality copper alloy, the Parker P401-6-62 excels in thermal conductivity. Efficient heat dissipation is critical in heavy-duty welding to prevent the nozzle from overheating, which can lead to premature failure or the adhesion of molten spatter. The precision machining ensures a tight fit over the nozzle insulator, maintaining consistent gas flow and preventing leaks that could compromise weld quality. Whether you are working in structural steel, heavy equipment manufacturing, or general repair, this Parker nozzle delivers the reliability and performance professional welders expect.

Choosing Parker consumables means investing in quality without compromising on compatibility. This nozzle fits seamlessly onto standard nozzle insulators found on Tweco No. 4 guns and compatible 400A torches from other manufacturers. It is an ideal choice for shops looking to maintain high productivity levels with reliable, long-lasting front-end parts.