The Thomas & Betts 54178NT04 narrow-tongue copper lug is a critical component in electrical systems, providing a reliable connection for heavy-gauge wires. Constructed from high-quality copper and finished with tin plating, this lug ensures excellent conductivity and corrosion resistance. Designed for 300 kcmil wire and a 1/4" bolt size, it's ideal for applications requiring robust and secure connections in industrial settings. The inclusion of an inspection hole allows for visual verification of the connection's integrity, enhancing safety and reliability. Dimensions may vary up to +/- .030.