The 031-8 is a BNC "T" adaptor with jack-plug-jack configuration (UG-274/U standard) designed for RF signal distribution and connection in coaxial cable systems. It features a 50-ohm impedance characteristic with a frequency range from DC to 4 GHz, supporting VSWR of 1.5 maximum and a dielectric withstanding voltage of 1500 VRMS minimum. The adaptor is constructed with a brass body with nickel plating, silver-plated brass contact pins, and phosphor bronze silver-plated contact pins, with a PTFE natural insulator. It operates reliably across a temperature range of -65°C to +165°C and is rated for a minimum of 500 connection cycles, making it suitable for laboratory test equipment, RF measurement systems, and field deployment applications requiring robust, repeatable connections.