031-204 is a 50O BNC straight jack-jack adapter designed for RF coaxial cable interconnections. This adapter features a nickel-plated body with silver-plated contacts and is rated for industrial-grade applications. The connector utilizes a 2-stud bayonet lock coupling mechanism per MIL-STD-348 and operates over a frequency range up to 4 GHz with low reflection characteristics. It supports an operating temperature range of -65°C to +165°C and offers a minimum durability of 500 mating cycles. Common applications include test equipment, instrumentation, and telecommunications systems requiring reliable BNC-to-BNC connections.