11101204 - Tweco 11-45 Contact Tip for 0.045" Wire (25 Pack)

Reliable Consumables for Production Welding

The Tweco 11-45 (SKU: 1110-1204) is a standard copper contact tip designed for use with 0.045-inch (1.2mm) welding wire. Part of the widely used 11 Series, this contact tip is engineered to fit Tweco No. 1 MIG guns and various Mini-MIG systems found in light-to-medium duty fabrication setups. This package contains 25 individual tips, making it a cost-effective solution for workshops that require consistent inventory levels to maintain uptime.

Manufactured from high-grade copper alloy, these tips provide excellent thermal and electrical conductivity. This ensures efficient current transfer to the welding wire, which is critical for maintaining a stable arc and achieving sound weld penetration. The internal bore is precision-drilled to a nominal diameter of 0.054 inches, providing the optimal clearance for 0.045-inch wire to feed smoothly without snagging, while still maintaining sufficient electrical contact.

Installation is straightforward thanks to the standard 1/4"-28 UNF thread, which mates perfectly with standard 11-series gas diffusers. The 1.0-inch overall length is compact, suitable for the smaller form factor of No. 1 guns used in automotive repair, sheet metal fabrication, and hobbyist applications. By choosing genuine Tweco specifications, operators ensure compatibility and performance consistency across their welding equipment.