KP2742-1-38R-B25 - Lincoln Magnum PRO 350A MIG Nozzle, 3/8 Bore, 1/8 Recess (25 Pack)

Lincoln Electric KP2742-1-38R-B25 Magnum PRO 350A Gas Nozzle

The Lincoln Electric KP2742-1-38R-B25 is a premium gas nozzle designed for the Magnum PRO series of semi-automatic welding guns. Engineered to handle amperages up to 350A, this nozzle is an essential component for industrial MIG (GMAW) and gas-shielded flux-cored (FCAW-GS) welding operations. The nozzle features a 3/8-inch (9.5 mm) inner diameter, often referred to as the bore size, which provides a focused column of shielding gas. This smaller bore is particularly useful for accessing tighter joints or when welding at lower parameters within the 350A range where a wider gas envelope is not required.

One of the defining characteristics of this nozzle is its 1/8-inch (3.2 mm) recess. This recess places the contact tip slightly back inside the nozzle, offering a layer of physical protection against accidental contact with the workpiece, which can cause short circuits. Additionally, the recess helps to minimize the accumulation of spatter on the tip itself, thereby reducing the frequency of cleaning and extending the life of the contact tip. The thread-on connection style is a significant upgrade over slip-on designs, ensuring a mechanically secure fit that will not loosen during thermal cycling. This tight connection also facilitates superior heat transfer from the nozzle to the gun's gooseneck, helping to keep the front-end consumables cooler during extended welding arcs.

Supplied in a bulk package of 25 units, the KP2742-1-38R-B25 is ideal for high-volume fabrication environments where minimizing inventory management time is crucial. These nozzles are manufactured from high-grade copper alloy, chosen for its durability and thermal properties. They are fully compatible with the Magnum PRO system's diffusers and insulators, ensuring a seamless integration into your existing Lincoln Electric welding setup. Whether used in automotive manufacturing, heavy equipment repair, or general structural fabrication, these nozzles deliver consistent performance and reliability.