KP2743-2-62F-B25 - Lincoln Magnum PRO 550A MIG Nozzle, Flush, 5/8 Inch Bore (25 Pack)

Heavy-Duty Lincoln Electric Magnum PRO Nozzles

The Lincoln Electric KP2743-2-62F-B25 is a premium 25-pack of gas nozzles designed for the rigorous demands of industrial MIG welding. Part of the renowned Magnum PRO series, these nozzles are engineered to withstand high-amperage applications, rated up to 550 amps. This makes them an essential consumable for heavy fabrication shops, structural steel welding, and manufacturing environments where heat buildup and duty cycles are intense. The nozzle features a standard 5/8-inch (15.9 mm) inner diameter, which is the industry standard for general-purpose welding, providing a stable column of shielding gas to protect the weld pool from atmospheric contamination.

One of the defining characteristics of this specific nozzle is its "Flush" tip relationship. In this configuration, the contact tip sits flush with the end of the nozzle. This design is highly favored by operators who require a balance between gas coverage and visibility. Unlike recessed tips, which are better for high-stick-out applications, or protruding tips used for tight access, the flush design allows the welder to get close to the work while maintaining a consistent electrical stick-out. It is versatile enough for short-circuit transfer as well as spray transfer modes, making it a go-to choice for varied welding tasks.

The slip-on connection style of the KP2743-2-62F simplifies maintenance and replacement. Unlike threaded nozzles that can seize due to thermal expansion or spatter buildup, the slip-on design utilizes a friction fit (often with a nozzle insulator or spring) that remains secure during operation but can be easily pulled off for cleaning or replacement. This feature significantly reduces downtime on the production line. Supplied in a bulk package of 25, this SKU ensures that your tool crib remains stocked, minimizing work stoppages due to lack of consumables. Trust Lincoln Electric's manufacturing quality to deliver consistent dimensions and superior heat resistance in every nozzle.

Key Benefits for the Welder:

• High Heat Resistance: Capable of sustaining 550A, reducing the frequency of melting or deformation.


• Optimal Gas Flow: The 5/8" bore ensures adequate shielding gas coverage for standard wire diameters.


• Quick Maintenance: Slip-on design allows for rapid removal to clear spatter or change contact tips.