Tweco BP-4050 Mechanical Cable Lug with Cover 3/0-4/0 AWG

High-Performance Cable Termination for Professional Welders

Upgrade your welding cable connections with the Tweco 9515-1101 Ball-Point Lug & Cover, also known as the BP-4050. This premium mechanical lug is designed to facilitate a high-amperage connection between your welding power source and your secondary cables. Specifically engineered for large diameter cables sized 3/0 to 4/0 AWG, this lug is a staple in heavy manufacturing, shipbuilding, and structural steel environments where consistent power delivery is non-negotiable.

The standout feature of this product is its solderless, mechanical installation method. Soldering large gauge cables is a time-consuming process that requires significant heat and skill to perform correctly. The Tweco Ball-Point Lug eliminates this hassle. Using a large ball-point set screw, the lug mechanically secures the copper strands against the lug body. The rounded tip of the screw prevents the shearing of individual wire strands—a common problem with flat-tipped screws—ensuring the structural integrity of the cable is maintained even under tension. This results in a connection that is both mechanically strong and electrically efficient.

Durability and maintenance are key considerations for MRO professionals. The Tweco 9515-1101 is built to withstand the rigors of the job site. The copper alloy body resists deformation and corrosion, while the heavy-duty insulating cover protects the connection from physical damage, debris, and incidental contact. Because the connection is mechanical, it is fully reusable. When cables wear out or need to be shortened, the lug can be removed and reinstalled on a fresh section of cable in minutes, saving the cost of purchasing new terminals.

Compatible with any welding machine featuring 1/2-inch output studs, the Tweco BP-4050 is a versatile solution for grounding leads and electrode cables alike. Its efficient design minimizes resistance at the connection point, ensuring that the amperage you set on the machine is the amperage delivered to the arc. Trust in Tweco's decades of experience in welding accessories to keep your operations running smoothly and safely.