The thread of type FME product is M8X0.75. FME also have another name called SAP connector.They are used in the signal transmission with RF cable for all kinds of electronic instruments.Mobile communications,and antenna system at the frequency of 3GHz.They are in simple structure an d reliable connection. Specifications:1) Temperature range: -55+155°C(PE Cable-40-+85°)2)Insertion Loss ≤0.2dB/2GHz3)Impedance: 50Ω4) Frequency range: DC -3GHz5) Working voltage: 500V rms at sea level6)Withstand voltage:1000V rms at sea level7) Contact resistance: a) Center contact: ≤10mΩ b) Outer contact: ≤5mΩ8) Insulation resistance: ≥5,000MΩ9)VSWR straight ≤1.20 right angle ≤1.2510) Durability (mating): ≥500 times