12 specifies the number of contacts (12-pin). 'P' indicates a panel-mount receptacle. 'M' (first) indicates male connector gender, and 'M' (second) indicates male contact gender. 'P' (second) indicates panel mount. SF8001 is a specific variant code, indicating the assembly style is PCB 180° and the termination type is solder. M12 refers to a metric circular connector with a 12mm threaded diameter, and 'A' denotes A-coding, commonly used for sensors, actuators, and I/O connections.