N-5818C - Bernard Centerfire MIG Nozzle, 5/8" Bore, 1/8" Recess, Copper

Upgrade Your MIG Gun with Bernard Centerfire Performance

Welders know that downtime kills productivity, and the front end of your MIG gun is often the biggest culprit. The Bernard N-5818C Centerfire™ Nozzle is built to keep you welding longer and troubleshooting less. Designed for heavy-duty applications, this copper nozzle features a standard 5/8-inch bore that provides excellent gas coverage for most mild steel, stainless, and aluminum applications. The 1/8-inch recessed tip placement is ideal for preventing short circuits against the workpiece while keeping the tip close enough to the arc for smooth electrical transfer.

The real magic of the N-5818C lies in how it works with the Centerfire system. Say goodbye to seized threads and stripped contact tips. With this nozzle, the contact tip simply drops into the diffuser and is locked in place when you screw the nozzle on. This "drop-in" design means you can swap out consumables in seconds—no tools required. If you experience burnback, you won't be fighting to unscrew a fused tip; simply remove the nozzle and the tip comes right out. This feature alone saves countless hours of frustration on the shop floor.

Durability is key in professional welding, and the N-5818C delivers. Made from high-quality copper, it withstands the intense heat of high-amperage welding (rated for use with guns up to 600 amps, though commonly used in 300-400A ranges). The integrated spatter shield inside the nozzle helps keep your gas diffuser clean and ensures your shielding gas flows smoothly over the weld puddle. Smoother gas flow means less turbulence, better coverage, and higher-quality welds with less rework.

Whether you are running a Bernard Q-Gun, the newer BTB series, or an S-Gun, the N-5818C is the reliable workhorse nozzle you need. It fits securely, stays centered, and helps your gun run cooler. Make the switch to genuine Bernard Centerfire consumables and experience the difference in arc stability and consumable life.