The 8503-BLK-100 is a Type B hook-up/lead wire conforming to MIL-W-16878/1 specification, featuring a tinned copper conductor with PVC insulation designed for internal wiring applications in meters, panels, and electrical or electronic equipment. The wire is constructed with 22 AWG conductor in a 7x30 stranding configuration and a 0.010 inch PVC insulation wall thickness, resulting in an overall nominal diameter of 0.050 inches. It is rated for continuous operation at temperatures up to 105°C with a voltage rating of 600V, and complies with RoHS, CE Mark, and multiple international environmental directives. This wire is ideal for applications requiring reliable internal connections in control systems, instrumentation, and electronic assemblies where color-coded identification and temperature resistance are essential.