The male straight head of the 4Pin molded M5 connector is carefully crafted in accordance with the common industry standards. Engineering plastics that meet the requirements of electrical and mechanical properties are selected to ensure insulation and a certain degree of structural strength. The internal pins are made of metal materials with good electrical conductivity to guarantee the stable transmission of signals. The one-piece molding process is mature and reliable, making the overall structure compact and regular, effectively improving stability. The four pins are precisely processed with strict control over dimensional accuracy, and undergo conventional plating treatment on the surface. They can meet the requirement of low contact resistance in daily use and perform stably and reliably under long-term and high-frequency use in the conventional industrial environment. The straight head part is designed according to standard dimensions, enabling smooth insertion and extraction with the matching female socket, and the tolerance is reasonably controlled. It provides basic and reliable connection support for the assembly of general electronic equipment, the construction of industrial automation systems, etc., and is applicable in fields such as the control of ordinary machine tools and conventional power monitoring equipment.