The Lincoln Electric KP2742-1-38R is a high-performance thread-on gas nozzle engineered specifically for the Magnum PRO 350A series of MIG welding guns. Designed to meet the rigorous demands of industrial welding environments, this nozzle features a 3/8-inch (9.5 mm) inner diameter (ID) and a 1/8-inch (3.2 mm) contact tip recess. The specific bore size is optimized for applications requiring tighter access or specific gas flow characteristics suitable for medium-to-heavy duty cycles.
Constructed with durability in mind, the nozzle utilizes a robust thread-on mechanism. Unlike slip-on variants, the threaded connection ensures fixed concentricity between the contact tip and the nozzle bore, which is critical for maintaining consistent shielding gas coverage and weld quality. The threads are engineered with a coarse pitch, a deliberate design choice that mitigates the risk of seizing caused by thermal expansion and contraction cycles typical in high-amperage welding (rated up to 350A).
A key technical advantage of the KP2742-1-38R is its exterior finish. The nozzle is nickel-plated, providing a smooth, hard surface that resists the adhesion of weld spatter. This plating reduces the frequency of cleaning intervals and prolongs the service life of the consumable. It is compatible with wire sizes ranging from .035" to 5/64" and must be paired with 350A thread-on diffusers for proper assembly and function.
| Additional Information |
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| Amperage Rating:350 A |
| Bore Diameter (ID):3/8 in, 9.5 mm |
| Tip Relationship:1/8 in Recess, 3.2 mm Recess |
| Connection Type:Thread-On |
| Compatible Series:Magnum PRO 350A |
| Product Type:MIG Gun Nozzle |
| Material:Nickel Plated Copper/Brass |
| Compatible Brand/Model:Lincoln Magnum PRO 350A |
| Thread Type:Coarse Thread |
| Wire Size Compatibility:0.035 - 5/64 in |
| Packaging Description:1 per each |
| Item:Nozzle |
| Brand:Magnum |
