
Every welder knows that the contact tip is the unsung hero of the MIG gun. It takes the heat, transfers the current, and guides the wire right into the puddle. When your tip goes bad, your whole day goes bad—arc wandering, burn-backs, and stuttering feeds can ruin a perfect bead in seconds. That’s why pros stick with genuine Tweco 14-45 contact tips. Designed for running 0.045" wire, these tips are the industry standard for a reason: they work. Whether you are fabricating structural steel, repairing heavy equipment, or running production parts, these tips provide the consistency you need to keep the hood down and the sparks flying.
These tips fit the classic Tweco guns you likely have hanging on your machine right now—the No. 2, No. 3, and No. 4, as well as the Spray Master series. They thread in easily with a 1/4"-28 thread and seat firmly against the diffuser to ensure maximum conductivity. The copper alloy construction handles the heat of long welds, but like all consumables, they eventually wear out. As the wire slides through, it wears the hole into an oval shape, which kills your aim and makes the arc unstable. Having a fresh pack of 25 on hand means you never have to try and squeeze "just one more bead" out of a dead tip.
This 25-pack is perfect for the busy shop. You aren't buying them one by one; you're stocking up so your team has what they need. The 0.045" size is a workhorse gauge for medium-to-heavy fabrication, and these standard-duty tips are matched perfectly for that application. Don't let a $2 part ruin a critical weld. Swap your tips regularly, keep your liner clean, and use quality Tweco consumables to ensure your machine runs as smoothly as your hand moves.
| Additional Information |
|---|
| Brand:Tweco |
| Item:Contact Tip |
| Wire Size:0.045" |
| Packaging Description:25 Per Ea |
| Series:14 Series |
| Material:Copper Alloy |
| Thread Size:1/4"-28 UNF |
| Compatible Guns:Tweco #2, Tweco #3, Tweco #4, Spray Master |
| Bore Diameter:0.054" (1.4mm) |