KP2743-2-75S-B25 - Lincoln Electric 550A Slip-On MIG Nozzle, 3/4 Inch Bore, 1/8 Inch Stickout, 25-Pack

Maximize Visibility and Gas Flow

For professional welders tackling heavy-duty projects, the Lincoln Electric KP2743-2-75S nozzle is built to perform under pressure. Rated for 550 amps, this nozzle is designed to withstand the intense heat of high-deposition welding without premature failure. The defining feature of this model is its 1/8-inch (3.2 mm) stickout geometry. This design allows the contact tip to protrude slightly past the end of the nozzle, which can be a game-changer for visibility. When you need to see exactly where the wire is hitting the joint, or when you are welding in tight corners where a flush nozzle might obstruct your view, the stickout design gives you that extra bit of optical clearance to ensure your bead placement is perfect.

The large 3/4-inch (19 mm) inner diameter is another major advantage for welders running hot and fast. A wider bore means a broader column of shielding gas, which is essential when you are laying down big beads or weaving in the vertical position. It ensures that the molten pool remains fully protected from atmospheric contamination, reducing the risk of porosity and rework. The slip-on connection style is a favorite among operators for its simplicity. When it's time to clean out spatter or change a contact tip, you don't have to fight with seized threads. The nozzle simply slides off and on, getting you back under the hood faster.

This 25-pack is perfect for busy shops where running out of nozzles isn't an option. Consistent performance is key to a welder's rhythm, and Lincoln Electric's manufacturing standards ensure that every nozzle in the box fits and performs exactly like the last one. Whether you are welding thick structural beams or heavy machinery parts, having a fresh, high-quality nozzle on hand ensures your gas flow remains laminar and your arc remains stable. The robust construction resists deformation from heat, and the smooth surface finish helps minimize spatter adhesion, making your nozzle dip last longer and your cleanup time shorter.