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KP2743-1-75F - Lincoln KP2743-1-75F Magnum PRO 550A Flush Nozzle 3/4 Inch

Packaging: 1 Per Ea
$70.60/EA $45.44/1 Per Ea only $45.44/EASave 36%

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OVERVIEW

Reliable Nozzles for Magnum PRO Guns

Upgrade your MIG torch setup with the Lincoln KP2743-1-75F 550A Nozzle, designed to keep you welding longer with less downtime for consumable changes. If you are running a Magnum PRO 550A or a Curve HDE series gun, this nozzle provides the robust performance required for high-heat welding. The flush tip design is ideal for operators who need a standard stick-out configuration, offering a clear view of the arc while maintaining excellent gas shielding around the weld pool.

Welders know that spatter buildup is the enemy of productivity. Lincoln Electric has addressed this with a high-quality nickel plating on the KP2743-1-75F. This coating reflects radiant heat and prevents molten spatter from bonding tightly to the nozzle surface, making it much easier to clean out between passes. Additionally, the nozzle features coarse threads for attachment. This is a massive benefit on the shop floor; fine threads often cross-thread or seize up when the gun gets hot, requiring pliers or vice grips to remove. The coarse threads on this Magnum PRO nozzle allow for smooth removal and secure tightening by hand, ensuring you spend more time under the hood and less time fighting your equipment.

With a large 3/4 inch bore, this nozzle is built to handle the gas flow rates necessary for 550-amp welding. Whether you are welding thick plate steel or running flux-cored wires with gas shielding, the wide opening ensures your weld pool is protected from atmospheric contamination. It is a direct replacement for existing Magnum PRO setups and integrates seamlessly with Lincoln's high-performance expendables platform.

Features & Benefits

  • Spatter Resistant: Nickel plating keeps the nozzle clean and cool.
  • Easy Change-Out: Threaded design ensures alignment and prevents seizing.
  • High Capacity: Rated for 550A continuous welding.
  • Optimal Shielding: 3/4" ID provides broad gas coverage.
Additional Information
Brand:Lincoln Electric
Packaging Description:pack of 1
Amperage Rating:550 A
Bore Size:3/4 in (19 mm)
Tip Relationship:Flush
Connection Type:Thread-On
Compatible Series:Magnum PRO 550A, Magnum PRO Curve HDE
Material Finish:Nickel Plated

INCLUDED

  • (1) 550A Thread-On MIG Nozzle, Flush, 3/4 Inch ID

APPLICATIONS

  • Heavy Structural Steel Fabrication
  • Shipbuilding and Marine Repair
  • Heavy Equipment Manufacturing
  • Automotive Assembly
  • High-Amperage MIG/MAG Welding

FAQ

This nozzle is compatible with Lincoln Magnum PRO 550A guns and Magnum PRO Curve HDE series guns (250, 350, 450, 550) equipped with 550A diffusers.

The nozzle has a 3/4 inch (19 mm) inner diameter (bore size).

This is a thread-on nozzle. It requires a compatible threaded gas diffuser.

Flush refers to the relationship between the nozzle tip and the contact tip. In this configuration, the contact tip sits flush with the end of the nozzle.

The nickel plating helps reflect heat and prevents weld spatter from adhering to the nozzle, extending its lifespan and making it easier to clean.

Yes, while rated for 550A, it can be used for lower amperages, though a smaller bore nozzle might be preferred for tighter access or lower gas flow rates.

No, this nozzle is designed specifically for 550A thread-on diffusers. Always check your diffuser part number for compatibility.