FMAD1248 is a 2.92mm female to 2.92mm female 4-hole flange adapter designed for RF and microwave applications requiring reliable connector transitions. The adapter operates across a frequency range from DC to 40 GHz with a maximum VSWR of 1.25:1, ensuring excellent signal integrity and minimal reflections. The device features a passivated stainless steel body with beryllium copper contacts plated in gold over nickel, providing superior corrosion resistance and electrical performance. Mechanical specifications include a length of 0.755 inches (19.2 mm) and width of 0.5 inches (12.7 mm), with a 50-ohm impedance and straight body geometry. This adapter is ideal for general-purpose test equipment, rack-mounted systems, and panel-mount applications where external enclosure connections are required, offering excellent protection for expensive equipment through connector-saver functionality.