The 550P12F4 is SMA 2 Hole Flange 0.480” between holes Coaxial RF Female connector. This connector accepts a 12 mils Pin Diameter to interface with a Microstrip or Stripline line of 50 ohms and will operate up to 27 Ghz. Connector body is made of Passivated Stainless Steel and a center contact is made of Beryllium Copper Gold Plated. This SMA female connector is RoHS and REACH compliant.
Data Sheet: View PDF file for Dimensions and Specifications.