The 1057290-1 is a RF Connectors / Coaxial Connectors N ST JCK-REC 4HF PST Connector Style N Type Connector Type Receptacle, Female Socket Contact Termination Solder Shield Termination Solder Impedance 50 Ohm Mounting Type Panel Mount Mounting Feature Flange Fastening Type Threaded Frequency - Max 11GHz Number of Ports 1 Features Extended Insulation Housing Color Silver Body Material Brass Body Finish Nickel Center Contact Plating Gold Dielectric Material Polytetrafluoroethylene (PTFE) Operating Temperature -65°C ~ 165°C