5-51864-1 is a ring tongue terminal designed for 16–14 AWG solid or stranded wire applications. The terminal features a copper body per ASTM B-152 with tin plate finish per ASTM B545, and includes a blue nylon sleeve for insulation. Key technical specifications include a maximum operating temperature of 105°C, voltage rating of 500 V maximum, and a tongue material thickness of 0.79±0.05 mm. The terminal dimensions are 5.00±0.08 mm ("A" dimension) with a minimum body length of 7.14 mm and maximum overall length of 21.44 mm. This terminal is commonly used in electrical wiring harnesses, automotive applications, and industrial control systems where reliable ring tongue connections are required for secure stud attachment.