KP2743-2-62F - Lincoln Magnum PRO 550A Flush Nozzle 5/8 Inch KP2743-2-62F

Heavy-Duty Performance for Magnum PRO Systems

The Lincoln Electric KP2743-2-62F is a premium gas nozzle designed specifically for the Magnum PRO 550A series of MIG welding guns. Engineered for high-amperage industrial environments, this nozzle supports welding currents up to 550 amps, making it an essential component for heavy fabrication, structural steel, and manufacturing applications. The nozzle features a standard 5/8-inch (15.9 mm) bore, which provides a balanced shield gas flow suitable for a wide variety of joint configurations and welding positions.

One of the standout features of this consumable is its robust construction. The nozzle is nickel-plated, a critical design choice that helps minimize spatter adhesion. In high-heat, high-deposition welding, spatter buildup can quickly obstruct gas flow and degrade weld quality. The plating on the KP2743-2-62F ensures that spatter can be easily removed, extending the service life of the part and reducing the frequency of replacements. This durability translates directly to cost savings and improved uptime on the production floor.

The "flush" tip relationship of this nozzle means the contact tip sits flush with the end of the nozzle. This configuration is often preferred for its versatility, offering a good balance between gas coverage and visibility of the weld puddle. It allows the welder to get close to the work when necessary while maintaining adequate stick-out. Additionally, the slip-on design eliminates the need for threaded connections, which can seize up due to thermal expansion and spatter. Operators can simply pull the old nozzle off and slide the new one on, ensuring seamless transitions during maintenance intervals.

Compatible with Lincoln's KP2747-2 gas diffusers, this nozzle is part of a modular system designed to keep the front end of your welding gun cool even after repeated use. Whether you are running .035 solid wire or larger 1/8-inch cored wires, the KP2743-2-62F delivers consistent performance and reliability that professional fabricators demand from the Lincoln Electric brand.