4591 - Bernard 4591 Copper MIG Nozzle Assembly, 3/4 Inch Bore, 10-Pack

Heavy-Duty Bernard 4591 Copper Nozzle Assembly

The Bernard 4591 Nozzle/Insulator Assembly is a premium OEM consumable designed for industrial MIG welding applications requiring high amperage and superior durability. Manufactured from high-grade copper, this nozzle is engineered to withstand the intense heat generated during welding operations ranging from 400 to 500 amps. The solid copper construction ensures excellent thermal conductivity, rapidly dissipating heat to prolong the service life of the nozzle and the front-end consumables of your MIG gun.

Featuring a large 3/4-inch (19 mm) bore, the 4591 nozzle provides extensive shielding gas coverage, making it ideal for heavy fabrication, structural steel, and other applications where weld pool protection is critical. This specific model is a complete assembly, integrating the nozzle and insulator into a single unit, which simplifies inventory management and streamlines the replacement process on the production floor. It is fully compatible with Bernard Q-Gun, S-Gun, and T-Gun series MIG guns, ensuring a perfect fit and reliable electrical isolation.

Supplied in a convenient package of 10, these nozzles are essential for maintaining continuous operations in high-volume welding environments. The precision machining guarantees a consistent gas flow pattern, reducing the risk of porosity and ensuring high-quality weld deposits. Whether utilized in automated setups or manual welding stations, the Bernard 4591 delivers the performance and reliability expected from genuine Bernard components.