The 656-1403-304F is a high-intensity white LED panel mount indicator designed for industrial signaling and status indication applications. This single-color indicator features a flat polycarbonate lens (UL 94V-0) with white nickel plating and operates at 20 VDC with a typical current draw of 20 mA, delivering a typical intensity of 1310 millicandelas. The indicator is housed in a brass body with white nickel plating and includes a bronze lock washer and brass nut, all nickel-plated for corrosion resistance. It is rated for panel thicknesses up to 0.450 inches with a 0.500-inch mounting hole and requires 5 in-lbs of mounting torque. The product is UL 508 listed, NEMA 4X rated, and IP66/67 certified, making it suitable for harsh industrial environments including control panels, machinery status displays, and process monitoring systems where reliable visual indication is essential.