What does this Lincoln nozzle do?

The nozzle directs shielding gas around the weld puddle to prevent atmospheric contamination. A clean, undamaged nozzle is essential for stable arc performance, low spatter, and sound welds.

How often should I replace a MIG gun nozzle?

Replace the nozzle when spatter buildup restricts gas flow, when the bore is distorted from heat, or when you notice shielding gas coverage problems. Regular cleaning with nozzle gel extends service life.

What nozzle thread or connection style does this use?

Lincoln nozzle fitment varies by gun series. Some use threaded connection, others slip-on or bayonet styles. Confirm the connection type is compatible with your Magnum or Magnum PRO gun before ordering.

Can I use this nozzle for flux-cored welding?

Self-shielded flux-cored welding does not require shielding gas, so some operators weld without a nozzle. However, gas-shielded flux-cored (FCAW-G) still requires a nozzle for gas coverage. Confirm your process.

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Lincoln Magnum PRO Nozzle 550A, Thread-on, Stickout, 1/2 in (12.7 mm) ID KP2743-1-50S

SKU: KP2743-1-50S

$29.58 ~~$37.12~~

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Magnum® PRO Gas Nozzle for Magnum® PRO Semi-Automatic Welding Guns. 1/8 in. Stickout Nozzles rated for 550A.

Overview

Lincoln Magnum PRO Nozzle 550A, Thread-on, Stickout, 1/2 in (12.7 mm) ID KP2743-1-50S

Magnum PRO 550A Gas Nozzles provide premium expendable performance and keep the front of the welding gun cool after repeated use. Used with Magnum PRO 550A Contact Tips and Diffusers to provide any configuration for your application!

Features

Spatter Resistant Nickel Plated to minimize spatter adhesion
Easy To Unscrew Coarse threads to prevent seizing after repeated use
Offered in various sizes and styles for any configuration

Specifications

Feature	Value
Processes	Flux-Cored (FCAW) MIG (GMAW)

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