Tweco GC-500 Senior Copper Work Clamp 500A

Reliable Grip for Stable Welding Arcs

A solid ground is the foundation of every good weld, and the Tweco GC-500 Copper Ground Clamp is built to provide exactly that. Known in the industry as a "Senior" style clamp, this 500-amp workhorse is designed to eliminate the common frustrations associated with poor grounding, such as sputtering starts, wandering arcs, and inconsistent bead profiles. Whether you are fabricating in a shop, working on a pipeline, or repairing heavy equipment, the GC-500 delivers the performance professional welders demand.

The core of the GC-500's performance lies in its copper alloy construction and powerful grip. The jaws are designed to bite through light rust and scale, establishing an immediate and clean electrical connection. With a wide 2-inch opening, you can easily clamp onto a variety of surfaces, from flat plate to round pipe. The copper material not only conducts electricity efficiently but also helps pull heat away from the connection point, keeping the clamp cooler during long welding sessions. This durability ensures that the clamp remains a reliable part of your toolkit for years, rather than a disposable consumable.

Usability is also a key feature of the GC-500. The ball-point cable connection makes installation fast and simple—just strip your welding cable, insert it into the socket, and tighten the screw. It accommodates cables up to 4/0 size, ensuring you have the capacity for high-amperage work. The 10-inch length offers excellent leverage, allowing you to open the strong spring with one hand while positioning the clamp with the other. Upgrade your welding setup with the Tweco GC-500 and experience the difference a high-quality ground clamp makes in your daily work.