Tweco 4-MPC Male Cable Connector (3/0 - 4/0 AWG) - Master Pack of 48

The Standard for Reliable Power Connections

Every welder knows the frustration of a loose cable connection. It starts with a sputtering arc, leads to a hot cable, and ends with you stopping work to wiggle a connector that’s seen better days. With the Tweco 4-MPC Male Cable Connector, you are investing in the industry standard for quick, reliable, and tough cable connections. This Master Pack of 48 is perfect for outfitting the whole shop or keeping the tool crib stocked for the year. No more scavenging for parts when a cable snaps or you need to extend your reach across the bay.

Designed for the heavy stuff, these connectors fit 3/0 and 4/0 welding cable, handling the high amps required for serious structural work. The magic lies in the Tweco cam-lock design. You just plug it in and give it a twist. It locks tight and stays tight, even when you're dragging 50 feet of heavy copper over concrete, through dirt, and around corners. The connection is solid, meaning you get full power to the stinger or feeder, resulting in a smoother, more consistent arc.

Installation is straightforward. Strip your cable, slide on the heavy-duty rubber cover, insert the copper into the brass body, and tighten it down. The ball-point connection crushes the strands together for maximum conductivity without fraying them. The rubber covers are built to take a beating—they resist oil, cuts, and the heat of the job. Whether you are building a new set of leads or repairing old ones, sticking with genuine Tweco connectors ensures your gear is ready to perform when the hood drops.