11401304 - Tweco 14T-45 Standard Contact Tip 0.045" (25 Pack)

Reliable Arc Performance with Tweco 14T-45 Tips

Every welder knows that the contact tip is the final transfer point for welding current, making it one of the most critical components in your MIG gun. The Tweco 14T-45 (Part No. 1140-1304) is the classic, heavy-duty contact tip designed for running 0.045" wire. If you are using a Tweco #2, #3, or #4 MIG gun—or any gun set up with a standard Tweco 14-series front end—this is the tip you need for smooth, consistent welds. This pack includes 25 tips, ensuring you have plenty of spares on hand for long projects.

Why stick with genuine Tweco? It comes down to the arc. Cheap, generic tips often have inconsistent bore sizes or use lower-grade copper alloys. This can lead to "keyholing" (where the hole wears into an oval shape), causing the arc to wander and the wire to lose electrical contact. The Tweco 14T-45 is machined with precision to keep the wire centered and electrically charged right at the point of exit. This results in a crisp, stable arc, reduced spatter, and better bead profile. The high-quality copper also dissipates heat effectively, resisting the tendency of the wire to fuse to the tip (burnback) during starts and stops.

Installation is quick and secure thanks to the standard 1/4"-28 threads. The 1.5-inch length is the standard geometry for most medium-to-heavy duty applications, providing the right balance of reach and gas coverage when paired with a standard nozzle. Whether you are welding mild steel, stainless, or flux-cored wires, having a fresh contact tip is the easiest way to troubleshoot an erratic arc. If your wire feels like it's stuttering or the arc is sputtering, swapping in a fresh 14T-45 often solves the problem instantly.

This 25-pack is perfect for the professional welder or the serious hobbyist who burns a lot of wire. 0.045" wire is a staple for structural work and heavier plate, and these tips are built to handle the heat. Don't let a worn-out tip ruin your weld or frustrate your day. Stock up on the Tweco 14T-45 and keep your MIG gun running like new.