RF coaxial connector is an electronic product installed on the cable or the instrument, metal parts are generally made of copper material, a lead brass pin socket with beryllium bronze, with PTFE, including PTFE as insulation materials, RF coaxial connector is installed on the cable or an instrument element the electrical transmission lines are usually used to connect or separate, is a kind of commonly used electronic components, belonging to electromechanical integration products. Radio frequency coaxial connectors are generally installed on cables or instruments within an electronic component, is used for transmission line of electrical connection or separation of electronic components. It is a kind of mechatronic electronic component. The coating mainly consists of gold plating, silver plating, nickel plating, three element alloy plating and so on. The main technical indexes are characteristic impedance, insulation resistance, contact resistance, voltage Bobbi, insertion loss, and three order intermodulation.