61N40 - ESAB 61N40 Contact Tube 1/16" for ST-12/ST-23 MIG Guns (5-Pack)

Optimize Arc Stability with ESAB 61N40 1/16" Contact Tips

The ESAB 61N40 Contact Tube is a premium replacement consumable designed for professional welders who demand precision and durability. Sized for 1/16-inch (1.6mm) wire, this contact tip is an essential component for maintaining a stable arc in high-amperage MIG welding operations. The contact tip is the final point of electrical transfer in the welding circuit; therefore, the quality of the material and the precision of the machining directly impact weld quality. ESAB utilizes high-grade copper alloys to manufacture these tubes, ensuring superior electrical conductivity and resistance to heat buildup.

Compatibility is key when selecting MIG gun parts. The 61N40 is engineered to fit a variety of robust torches, including the ST-12, ST-23, and MT series (MT-200/250/400). These guns are workhorses in the industry, often found in shipyards, heavy fabrication plants, and structural steel shops. Using the correct OEM part guarantees that the threading and seating of the tip are perfect, preventing gas leaks or loose connections that can lead to resistive heating and premature failure of the diffuser or gun neck.

Over time, the bore of a contact tip wears into an oval shape due to the friction of the feeding wire. This "keyholing" effect can cause the arc to wander, resulting in poor bead profile and increased spatter. For 1/16" wire, which carries significant current, maintaining a tight electrical connection is vital. This 5-pack of contact tubes allows operators to swap out worn tips immediately, maintaining productivity and weld integrity. Regular replacement of contact tips is a cost-effective maintenance practice that prevents more expensive downtime down the line.

Features of the ESAB 61N40 include:

• Precision Machining: Smooth internal bore reduces friction and wire shaving.
• Thermal Durability: Resists melting and deformation under high heat.
• Versatile Fit: Standard fitment for multiple legacy and current ESAB gun models.

Equip your welding station with genuine ESAB consumables to ensure your equipment performs as intended by the manufacturer.