The 507-3918-1431-600F is an incandescent panel mount indicator cartridge designed for use with 507 series holders and clips. This red indicator operates at a forward voltage of 28V with a current draw of 40mA and delivers a luminous intensity of 0.30 candlepower. The cartridge is rated for 7,000 hours of operation, providing reliable long-term service in industrial control panels and status indication applications. It is constructed with clear anodized aluminum and is compatible with standard 3/8-32 threaded mounting systems, making it suitable for integration into existing panel assemblies and indicator systems.