11601137 - Tweco 16S-45 Standard Contact Tip 0.045 Inch (Pack of 25)

Precision Engineering for Consistent Arc Stability

The Tweco 16S-45 (SKU: 1160-1137) is a standard-duty contact tip engineered specifically for industrial MIG welding applications utilizing 0.045-inch (1.2mm) wire. Part of the widely utilized 16 Series, this consumable is manufactured from a high-quality copper alloy selected for its optimal balance of electrical conductivity and hardness. This material composition ensures efficient current transfer from the diffuser to the welding wire, which is critical for maintaining a stable arc and achieving consistent weld penetration.

Dimensional accuracy is a hallmark of genuine Tweco consumables. The 16S-45 features a precision-drilled bore that provides the necessary clearance for 0.045" wire while minimizing the wandering that can occur with looser tolerances. This tight control over internal geometry reduces micro-arcing inside the tip—a common cause of premature failure and burnback. The exterior is machined to standard 16 Series dimensions, featuring a 3/8"-24 UNF thread that ensures a secure, high-contact interface with the gas diffuser, further promoting thermal dissipation.

Designed for compatibility, these tips fit Tweco Professional Series No. 3 and No. 4 guns, as well as the Spray Master 350 and 450 series. They are an essential component for fabricators requiring reliable performance in medium-to-heavy duty welding cycles. This package contains 25 individual contact tips, providing a substantial inventory for production environments where equipment uptime is paramount.