  The entire tracking system of the ATLAS experiment will be replaced during
the LHC Phase-II shutdown. A new silicon Inner Tracker (ITk) will contain five
pixel layers equipped with new sensors and readout electronics capable to
improve the tracking performance, cope with the high particle multiplicity and
work in a high-luminosity environment. In order to standardize modules of the
Inner Tracker, the idea of a common hybrid pixel module was introduced to be
used in all regions of the detector. The common hybrid module assembly and
testing techniques will be presented. The module construction, metrology and
electrical testing results will be discussed. The work was done with the RD53A
pixel modules - prototype modules towards the final ITk pixel detector.
