KP2743-2-62R - Lincoln Magnum PRO 550A Slip-On Nozzle, 5/8" Bore, 1/8" Recess

Reliable Protection for Your Magnum PRO Gun

When you are laying down beads at high amperages, the last thing you want to worry about is your front-end consumables failing. The Lincoln Electric KP2743-2-62R nozzle is built to handle the heat of 550A welding while keeping your arc smooth and stable. Designed for the professional welder using the Magnum PRO series, this nozzle combines durability with ease of use. The slip-on design is a game-changer on the shop floor; gone are the days of wrestling with seized threads when you need to clean out spatter or swap a contact tip. Just pull it off, clean it up, and slide it back on—it stays secure thanks to the internal retention ring.

The 5/8 inch bore is the "goldilocks" size for most heavy-duty applications, giving you excellent gas coverage without being too bulky to see around. Whether you are welding structural steel or heavy equipment, this nozzle ensures your shielding gas gets exactly where it needs to be to prevent porosity. The 1/8 inch recess is particularly useful for protecting your contact tip. By keeping the tip tucked slightly inside the nozzle, you reduce the risk of it shorting out against the workpiece and keep it cleaner from spatter buildup. This means you spend less time changing tips and more time welding.

Lincoln Electric's Magnum PRO line is known for longevity, and this nozzle is no exception. The heavy-walled copper construction resists melting and deformation even under the intense heat of spray transfer welding. It is designed to resist spatter adhesion, making it easier to clean during your downtime. If you are running a Magnum PRO 350, 450, or 550 gun, this is the standard slip-on nozzle that delivers the performance you expect from Lincoln Electric. Keep a few in your toolbox to ensure you are always ready to tackle the toughest jobs.