1577618-1 is a closed ring tongue terminal designed for secure wire-to-stud connections in electrical applications. It accommodates 24–22 AWG wire (0.205–0.326 mm²) and features a #4 stud with 3.02 mm diameter, straight orientation, and closed barrel construction with nickel plating for corrosion resistance. The terminal has a product length of 21.32 mm, tongue thickness of 0.79 mm, and supports compatible insulation diameters ranging from 0.89–1.9 mm. Operating over a temperature range of 0–260 °C, this STRATO-THERM terminal is partially insulated and complies with EU RoHS and ELV directives. It is commonly used in automotive, industrial, and electrical harness applications where reliable crimped connections and environmental durability are required.