KP2742-1-62R-B25 - Lincoln Magnum PRO 350A MIG Nozzle, 5/8" ID, 1/8" Recess (25 Pack)

Reliable Performance for Professional Welders

When you are under the hood, the last thing you want to worry about is your gun's front-end parts failing. The Lincoln Electric KP2742-1-62R gas nozzle is built to keep you welding smoothly, even when the heat is on. Designed specifically for Magnum PRO 350A welding guns, this nozzle is rated to handle 350 amps of output without overheating or deforming. The secret is in the high-quality copper alloy construction and Lincoln's design focus on heat dissipation. A cooler nozzle means less spatter buildup and easier cleaning, allowing you to spend more time laying beads and less time scraping out your cup.

This specific nozzle features a 1/8-inch (3.2 mm) recess, which is a favorite configuration for many welders. The recess provides a protective buffer for your contact tip, keeping it back from the arc and reducing the risk of it fusing to the wire or getting damaged by spatter. At the same time, it allows you to get close enough to the joint for precise control, making it excellent for fillet welds and tight corners. The 5/8-inch (15.9 mm) bore creates a wide, stable column of shielding gas, ensuring your weld pool stays protected from atmospheric contamination, which is crucial for passing X-ray quality checks.

One of the best features of the Magnum PRO series is the thread-on design. Unlike slip-on nozzles that can get loose and wobbly after a few heat cycles, this nozzle screws securely onto the diffuser. This ensures it stays perfectly centered, which is vital for even gas coverage. If a nozzle is off-center, you can get porosity on one side of the weld. The threads are robust and designed to resist seizing, so when it is finally time to swap it out, it comes off without a fight. This secure fit also helps transfer heat away from the front end more efficiently.

This 25-pack is perfect for busy shops or mobile rigs where running out of consumables isn't an option. By sticking with genuine Lincoln Electric parts, you ensure that your Magnum PRO gun performs exactly as it was engineered to. The compatibility with Magnum PRO 350A tips and diffusers means you get a seamless fit every time. Whether you are running solid wire on mild steel or flux-cored wire for heavy structural work, the KP2742-1-62R gives you the durability and performance you need to get the job done right.