Replacement Hinge Pin for K4000 and Pro4000 Gouging Torches

Don't Let a Wobbly Lever Slow You Down

If you are running a K4000 or Pro4000 gouging torch, you know that the lever action is everything. It’s what holds your carbon rod steady while you blast through welds and steel. When that lever starts to feel sloppy or the pivot point gets loose, it makes it harder to change rods quickly and keep a steady arc. The Arcair 94-632-094 Hinge Pin is the exact part you need to tighten everything back up and get your torch feeling brand new again.

This isn't just a generic pin; it's the genuine Arcair part made to fit your torch perfectly. Whether you are using the modern Pro4000, the industry-standard K4000, or even keeping an old reliable K-5 or K-400 alive, this pin fits them all. Gouging is rough work—sparks, heat, and grit are everywhere—and your torch takes a beating. The hinge pin takes the stress every time you clamp down on a new rod. Replacing it is a cheap and easy fix that prevents bigger problems later, like a broken lever or a torch that won't hold a rod tight.

Keep a few of these in your toolbox or the shop supply cabinet. It takes just a minute to swap out the old, worn pin for this new one, and you'll notice the difference immediately. The lever will snap shut with authority, and you can get back to gouging without fighting your equipment. Don't struggle with worn-out gear; refresh your torch with the right parts and keep the sparks flying.