Abstract: An ultrasonic transducer socket assembly for simultaneously tightening a bolt and measuring bolt load. A pole adaptor rigidly attached to a driving socket for engaging and driving a bolt has a stationary cylinder mounted therein. A second cylinder rotatably and slidably received in the stationary cylinder has an ultrasonic transducer pivotally mounted at one end that contacts the bolt to be tightened when the socket is engaged with the bolt. The rotating cylinder and transducer are rotated approximately 180 degrees during engagement of the socket and bolt to smear an even couplant layer between the bolt and transducer to assure consistent measurements of bolt load during tightening.