KP2742-1-62S-B25 - Lincoln Magnum PRO 350A MIG Nozzle 1/8 Stickout 5/8 ID (25-Pack)

Lincoln Electric KP2742-1-62S-B25 Magnum PRO Nozzle Overview

The Lincoln Electric KP2742-1-62S-B25 is a premium gas nozzle designed specifically for the Magnum PRO series of semi-automatic welding guns. Engineered to handle high-amperage applications, this nozzle is rated for 350A, making it an essential component for industrial fabrication and heavy-duty welding tasks. The nozzle features a thread-on connection style, which ensures a tight, secure fit to the diffuser, minimizing the risk of gas leaks or loose connections during operation. This secure fit also promotes better electrical conductivity and heat transfer, which are critical for maintaining consistent weld quality over long shifts.

This specific model features a 1/8 inch (3.2 mm) stickout and a 5/8 inch (15.9 mm) inner diameter (ID). The 1/8 inch stickout is designed to keep the contact tip slightly recessed, which can help prevent the tip from shorting against the workpiece while still allowing for excellent visibility of the weld puddle. The 5/8 inch bore provides a generous envelope of shielding gas, ensuring that the molten weld pool is adequately protected from atmospheric contamination, reducing porosity and spatter. These dimensions make the KP2742-1-62S ideal for a wide range of standard MIG and MAG welding procedures.

Durability is a key focus of the Magnum PRO line. These nozzles are constructed to withstand the intense heat and spatter associated with 350A welding. The materials used facilitate rapid heat dissipation, keeping the front end of the gun cooler. This not only extends the life of the nozzle itself but also helps protect the contact tip and diffuser from premature failure due to overheating. By maintaining a cooler operating temperature, the consumables last longer, reducing downtime for changeovers and lowering overall operational costs.

Supplied in a bulk pack of 25, the KP2742-1-62S-B25 is perfect for high-volume shops that require a steady supply of reliable consumables. Whether you are welding structural steel, heavy machinery, or automotive components, these Lincoln Electric nozzles provide the consistency and performance professional welders demand. Pair them with genuine Magnum PRO contact tips and diffusers to fully leverage the performance benefits of the Magnum PRO system.