9ST10575 - 1/2-Inch Bore Conical MIG Nozzle, 1/8 Recess (2-Pack)

Precision Gas Shielding for Quality Welds

The 1/2-Inch Bore Conical MIG Nozzle is a critical consumable designed to maintain the integrity of your Gas Metal Arc Welding (GMAW) process. This package contains two high-quality replacement nozzles, engineered to fit standard MIG guns, commonly compatible with Tweco-style front-end consumables. The nozzle features a 1/2-inch (12.7mm) bore, which is the versatile standard for medium-to-heavy duty welding applications, offering an optimal balance between shielding gas flow rate and accessibility to tight joints.

Constructed from a robust copper alloy, these nozzles are built to withstand the intense thermal cycling and radiant heat generated during the welding arc. The material also provides excellent electrical conductivity properties, although the nozzle itself is typically insulated from the electrically live contact tip by the gas diffuser and insulator. The conical geometry of the nozzle serves a dual purpose: it funnels the shielding gas (such as Argon/CO2 mixes) directly over the weld pool to prevent atmospheric contamination and porosity, while simultaneously tapering down to allow the operator a clearer line of sight to the arc and puddle.

A key specification of this nozzle is the 1/8-inch tip recess. This design places the contact tip slightly back inside the nozzle, offering protection against mechanical damage and reducing the likelihood of the tip shorting against the workpiece during tight maneuvering. Furthermore, the recess helps to shield the contact tip from the immediate spatter spray, prolonging the life of your consumables. Whether you are running solid wire or gas-shielded flux-cored wire, these nozzles ensure consistent laminar gas flow, which is essential for achieving X-ray quality welds. Regular inspection and cleaning of the nozzle bore are recommended to prevent spatter bridging, which can disrupt gas flow and cause turbulence.

This 2-pack ensures that maintenance downtime is minimized. When one nozzle becomes too clogged with spatter or deformed from heat, a fresh replacement is immediately available, ensuring your production line or repair job continues without interruption.