The 31-5539-1010 is a bulkhead through-hole PCB-mounted BNC straight jack with a nickel-plated die-cast zinc body, gold-plated phosphor bronze contacts, and a polypropylene (PPO) insulator. It features standard polarity, a bayonet coupling mechanism, withstands up to 500 mating cycles, and operates within a temperature range of -55°C to 85°C. Its design is suitable for RF communications and industrial applications.