Abstract: An apparatus and method that can automatically test whether a particular threaded blind hole has been properly formed. A nut driver, that can be a commercially available item is modified and acts to rotate a test plug within the blind threaded hole to be tested and monitors the torque upon the nut driver. If the monitored torque exceeds a predetermined maximum or is below a predetermined minimum torque value, this gives an indication that a particular blind hole is improper. A visual torque monitor gives a digital display of the torque reading at any given moment, so that a manual operator can monitor the torque readings and determine whether the limits are exceeded, or an electronic control can be used that acts to electrically monitor the torque readings and compare to the predetermined minimum and maximum readings. An electrical contact members acts to send a signal to the control mechanism that gives an indication that a given hole has been tested to a required depth and is proper up to that depth.