11601764 - Tweco Velocity VTHA-364 Heavy Duty Contact Tip 3/64" (10-Pack)

Technical Overview: Tweco Velocity VTHA-364 Contact Tips

The Tweco Velocity VTHA-364 Contact Tip (SKU: 1160-1764) represents a significant evolution in GMAW (MIG) consumable technology. Designed specifically for the Velocity series of MIG guns, this contact tip utilizes a proprietary threadless "drop-in" design. Unlike traditional threaded tips that rely on the thread interface for electrical transfer and thermal dissipation, the Velocity system employs a large surface area seating cone. This engineering choice maximizes the contact patch between the tip and the gas diffuser, ensuring a solid copper conductor path that significantly lowers electrical resistance and improves heat transfer.

This specific model, the VTHA-364, is engineered for 3/64" (1.2 mm) wire diameters. The "VTHA" designation typically indicates a heavy-duty profile, often optimized for higher amperage applications or specific wire types (such as aluminum) where thermal expansion and bore tolerance are critical factors. The tip features integrated gas ports, which streamline the shielding gas flow directly at the arc zone, reducing turbulence and improving weld pool protection. By eliminating threads, the risk of seizing or cross-threading during replacement is removed, reducing downtime in industrial environments.

The manufacturing process involves high-grade copper alloy to withstand the thermal cycling inherent in heavy industrial welding. The tip's geometry allows it to be rotated within the conductor tube to expose fresh contact surfaces if wear patterns develop, effectively extending the usable life of a single consumable. This pack contains 10 units, suitable for high-volume fabrication environments requiring consistent arc characteristics and minimal maintenance intervals.