KP2743-1-75S-B25 - Lincoln Magnum PRO 550A MIG Nozzle, 3/4 Bore, 1/8 Stickout (25-Pack)

Lincoln Magnum PRO 550A Gas Nozzle - 3/4" ID, 1/8" Stickout

Maximize the performance of your Lincoln Electric MIG gun with the Magnum PRO 550A Gas Nozzle (KP2743-1-75S-B25). Designed for professional welders who demand reliability and durability, this nozzle is built to withstand the intense heat of 550-amp welding procedures. The Magnum PRO expendables line is renowned for its longevity, and this nozzle is no exception, featuring high-quality copper alloy construction that effectively dissipates heat and resists spatter adhesion, keeping your workflow smooth and uninterrupted.

This nozzle features a 3/4-inch (19 mm) bore, the standard for high-amperage applications where maximum gas coverage is non-negotiable. The wide opening ensures that the shielding gas fully envelops the molten weld pool, protecting it from contaminants even during aggressive spray transfer modes. The 1/8-inch (3.2 mm) stickout configuration allows the contact tip to extend past the nozzle, offering superior visibility of the arc and allowing for tighter access into corners or deep V-grooves where a flush or recessed nozzle might obstruct the view or the fit.

The secure thread-on mechanism eliminates the wobble often associated with slip-on nozzles, ensuring the nozzle stays centered. This concentricity is vital for maintaining a laminar gas flow and preventing turbulence that could lead to weld defects. Sold in a convenient 25-pack, these nozzles ensure your shop is stocked and ready for continuous production. Upgrade to Magnum PRO consumables and experience the difference in arc stability and part life.

Features & Benefits

• High Duty Cycle: Rated for 550A, perfect for heavy manufacturing and structural steel.
• Optimal Shielding: 3/4" ID provides a wide gas envelope for large weld puddles.
• Enhanced Visibility: 1/8" tip stickout helps when welding in tight spots or tracking the joint.
• Secure Fit: Thread-on design prevents accidental dislodging and maintains alignment.
• System Compatibility: Seamlessly integrates with Magnum PRO diffusers and contact tips.