The 507-5068-3334-500F is a blue LED indicator lamp cartridge designed for 28 VDC operation with a cylindrical lens (FIG. 1) and aluminum housing. The lamp features a plastic lens containing an internal Fresnel ring pattern to ensure maximum light output, and is housed in an aluminum body with precise dimensional specifications. The device has an anode diameter of 0.330±0.010 inches (8.38±0.25 mm) and a pin diameter of 0.040±0.002 inches (1.02±0.05 mm), with an overall length of 160±0.010 inches (4.06±0.25 mm). This lamp cartridge is compatible with Dialight 250 and 508 series holders for 0.375-inch mounting holes or 515 series connectors for 9/32-inch mounting holes, making it suitable for panel-mount indicator applications in industrial control systems and instrumentation.