N-5818B - Bernard Centerfire Nozzle N-5818B | 5/8" Bore, 1/8" Recess, Brass

Bernard Centerfire N-5818B Brass MIG Nozzle

Upgrade your welding efficiency with the Bernard Centerfire N-5818B MIG Nozzle, designed to keep your arc stable and your downtime low. This brass nozzle features a standard 5/8-inch bore and a 1/8-inch tip recess, making it an excellent choice for general fabrication where optimal gas coverage and contact tip protection are essential. The brass construction provides superior heat dissipation, keeping the nozzle cooler during extended welds and preventing spatter from adhering too tightly.

The brilliance of the Centerfire system lies in its user-friendly design. The N-5818B nozzle works in tandem with Centerfire contact tips, which are "drop-in" and threadless. This means you can change a contact tip by simply unscrewing the nozzle by hand—no tools required. Once the nozzle is tightened back on, it automatically seats the tip firmly against the diffuser. This tapered seating mechanism creates a large surface area for electrical conductivity and heat transfer, far superior to traditional threaded tips that can loosen or overheat.

Turbulent shielding gas is a common cause of porosity, but the N-5818B solves this with its built-in spatter shield. This internal component smooths out the gas flow as it exits the diffuser, ensuring a laminar blanket of protection over your weld pool. It also acts as a barrier, preventing spatter from clogging the gas diffuser holes, which can be difficult and costly to clean or replace. This nozzle is fully compatible with all standard air-cooled Bernard Q-Guns and other guns utilizing the Centerfire front-end system.

Welders Supply recommends the N-5818B for welders who demand reliability and speed. The 1/8-inch recess helps protect the contact tip from radiant heat and short circuits, extending the life of your consumables. Whether you are welding mild steel, stainless, or aluminum, this genuine Bernard nozzle delivers the performance professional welders trust.