KP2743-2-62S-B25 - Lincoln Magnum PRO 550A Slip-On Nozzle, 5/8 ID, 1/8 Stickout (25 Pack)

Reliable Performance with Lincoln Magnum PRO Nozzles

For professional welders running high-amperage MIG guns, the nozzle is the first line of defense against spatter and heat. The Lincoln Electric KP2743-2-62S-B25 is built to keep you welding longer with less hassle. Designed for the Magnum PRO 550A series guns, this nozzle features a robust slip-on design. Unlike threaded nozzles that can cross-thread or seize up after a long day of welding hot joints, this slip-on model slides firmly into place and stays put until you are ready to swap it out. The built-in spring tension ensures a tight fit that won't rattle loose, maintaining consistent gas flow directly to your puddle.

This specific nozzle features a 5/8-inch bore, which is the industry workhorse size for general fabrication and structural steel work. It provides a wide, stable umbrella of shielding gas, ensuring your welds remain porosity-free even when moving fast. What sets this model apart is the 1/8-inch contact tip stickout. By positioning the tip slightly past the nozzle edge, you get superior visibility of the wire as it hits the joint. This is a huge advantage when you are tracking a complex seam or need to get the arc deep into a fillet weld. The stickout also helps keep the nozzle edge further back from the radiant heat of the arc, potentially extending the life of the nozzle itself.

Sold in a convenient 25-pack, this option is perfect for busy shops that can't afford to run out of consumables mid-shift. The heavy-duty copper alloy construction resists spatter adhesion, making it easier to clean with your welpers or nozzle dip. Whether you are pushing hard on heavy plate or doing production runs, these Lincoln Electric nozzles deliver the consistency and durability professional fabricators demand from their equipment.