640051-1 is an open barrel ring tongue terminal designed for machine-applied wire terminations. This Type F terminal accommodates 18-14 AWG (0.8-2.0 mm²) wire with insulation size of 0.105-0.145 inches (2.67-3.68 mm) and is constructed from tin plated steel with a stock thickness of 0.025 inches (0.64 mm). The terminal features dimensions including width of 0.370 inches (9.40 mm), length of 0.772 inches (19.61 mm), and is available for multiple stud sizes including 5, 6, 8, and 10. These terminals are commonly used in electrical wiring applications requiring reliable, machine-crimped connections in automotive, industrial, and electronic assemblies.