22-62 - Tweco Style MIG Welding Nozzle, 5/8 Inch Bore, Slip-On Adjustable, 250 Amp Capacity

Precision Gas Coverage for Medium-Duty Fabrication

The Tweco Style 22-62 MIG Nozzle is a critical component for maintaining arc stability and weld quality in medium-duty industrial applications. Engineered to meet the rigorous demands of professional fabrication, this nozzle features a 5/8-inch (16mm) bore, which is the industry-standard aperture for 250-ampere welding procedures. The bore size is calculated to provide a laminar flow of shielding gas—whether CO2 or Argon blends—ensuring the weld pool is adequately protected from atmospheric contamination without inducing turbulence that could lead to porosity.

Manufactured from 122 DHP (Deoxidized High Phosphorus) copper alloy, this nozzle exhibits superior thermal conductivity. This metallurgical choice is deliberate; it allows the nozzle to rapidly dissipate the intense heat generated during the welding arc, thereby prolonging the service life of both the nozzle and the underlying insulator. The copper construction also provides a natural resistance to spatter adhesion, making post-weld cleaning operations more efficient. The nozzle is designed to interface seamlessly with the Series 32 nozzle insulator, utilizing a friction-fit slip-on mechanism. This design choice eliminates threads, which are prone to seizing in high-heat environments, and facilitates rapid changeovers.

One of the primary technical advantages of the 22-62 design is its adjustability. By sliding the nozzle along the insulator, the operator can precisely control the contact tip recess or protrusion. This geometric relationship is vital for controlling wire stickout and electrical stickout (ESO), directly influencing voltage drops and arc characteristics. This nozzle is fully compatible with Tweco No. 2 Classic, Weldskill, and select Lincoln Magnum MIG guns, making it a versatile inventory item for diverse welding fleets.