4391 - Bernard Style 4391 Brass MIG Nozzle, 5/8 Inch, 300A

Reliable Gas Coverage for Quality Welds

Upgrade your MIG gun's front end with this robust Bernard-style 4391 brass nozzle. If you are running a Bernard Q-Gun or S-Gun setup equipped with a 4335 diffuser, this nozzle is the perfect fit for your daily welding needs. Built to handle up to 300 Amps, it stands up to the heat of long beads and high-duty cycles without compromising performance. The solid brass construction not only feels substantial in the hand but also resists spatter adhesion better than copper counterparts in certain applications, making cleanup easier at the end of a shift.

Precision & Durability

The 5/8-inch orifice is the industry standard for a reason—it offers excellent visibility of the contact tip and weld puddle while maintaining a laminar flow of shielding gas. This ensures your welds remain clean and free of defects caused by atmospheric contamination. The integrated insulator means you have fewer loose parts to worry about when swapping out consumables on the fly. It slides securely over the 4335 diffuser, ensuring a tight seal and electrical isolation where it counts.

Value for the Professional Welder

Why overpay for consumables when you can get professional-grade performance with this high-quality replacement? This nozzle is designed to keep your arc smooth and your downtime low. Whether you are fabricating mild steel, stainless, or aluminum, having a fresh, clean nozzle is the first step to a perfect bead. Stock up on these 4391-style nozzles to ensure you are always ready to lay down the best welds possible.