57N49 - Weldcraft 57N49 Collet 5/32" (4.0mm) for WP-27 Series Torches (2-Pack)

Keep Your Big Torch Running Smoothly

If you are running a WP-27 torch, you aren't messing around with thin sheet metal. You are likely pushing serious amps, maybe welding heavy aluminum castings, thick pipe, or structural steel. When you are welding at those high heat levels, your consumables take a beating. The Weldcraft 57N49 is the standard 5/32-inch (4.0mm) collet designed to fit your WP-27A or WP-27B torch. It’s the part that grabs your tungsten and holds it tight, making sure the power gets from your machine to the arc without any hiccups.

We've all been there—you tighten down your back cap, but the tungsten still slips, or worse, you start getting a sputtering arc because the collet is twisted or worn out inside. That’s usually a sign your collet has lost its spring or has overheated. Using a fresh, high-quality Weldcraft collet like the 57N49 ensures you get a solid electrical connection every time. Good contact means a stable arc, better heat control, and less frustration when you are in the middle of a long bead. Because these are copper and sit right in the heat zone, they do wear out over time, especially if you are swapping tungstens frequently.

This pack comes with two collets, so you can throw one in your torch and keep the other in your kit as a backup. There is nothing worse than shutting down a job because a five-dollar part failed. These collets are made to precise tolerances so they won't crunch your tungsten or get stuck in the collet body. Whether you are using pure tungsten, thoriated, or a rare-earth blend, if it's 5/32", this is the holder you need for your 27-series rig. Keep your consumables fresh and your welds clean.