KP2742-2-50F - Lincoln Electric KP2742-2-50F Magnum PRO 350A MIG Nozzle, 1/2-in Flush

Lincoln Electric KP2742-2-50F Magnum PRO 350A Nozzle Overview

The Lincoln Electric KP2742-2-50F is a premium gas nozzle designed specifically for the Magnum® PRO series of semi-automatic MIG welding guns. Engineered for industrial environments, this nozzle features a 350A amperage rating, making it suitable for medium to heavy-duty welding applications where heat management and durability are critical. The nozzle utilizes a slip-on connection mechanism, which significantly reduces downtime during consumable changeovers compared to threaded alternatives. A built-in friction spring ensures a secure fit on the diffuser while allowing for easy removal when necessary.

This specific model features a 1/2-inch (12.7 mm) inner diameter (ID) bore, providing a focused gas shield ideal for standard wire diameters and joint configurations. The flush tip geometry means the contact tip sits flush with the end of the nozzle, offering a balance between gas coverage and visibility, commonly used in short-circuit and spray transfer modes. The flush design is versatile, preventing the contact tip from shorting against the workpiece while maintaining adequate stick-out for stable arc characteristics.

Constructed with performance in mind, the KP2742-2-50F is nickel-plated. This plating serves a dual purpose: it reflects radiant heat to keep the front-end consumables cooler, and it provides a slick surface that resists the adhesion of welding spatter. Less spatter buildup means less time spent cleaning the nozzle and better gas flow consistency. This nozzle is designed to work seamlessly with Lincoln's Magnum PRO 350A contact tips and the KP2746-2 gas diffuser, forming a cohesive front-end system that maximizes conductivity and longevity.

Key Technical Specifications:

• Part Number: KP2742-2-50F
• Amperage Class: 350 Amps
• Bore Size: 1/2 inch (12.7 mm)
• Tip Recess: Flush
• Connection: Slip-On
• Plating: Nickel