A method for assembling an ultrasonic surgical assembly includes the steps of substantially simultaneously removably coupling an ultrasonic-driving-wave-signal generating circuit to an ultrasonic surgical handle body and removably inserting an ultrasonic-movement-producing distal end of a rotatably free ultrasonic transducer into the ultrasonic surgical handle body. An ultrasonic waveguide is inserted into the ultrasonic surgical handle body opposite the ultrasonic-movement-producing distal end. The ultrasonic waveguide is rotated with respect to the ultrasonic transducer to fixedly couple the ultrasonic waveguide to the ultrasonic-movement-producing distal end of the ultrasonic transducer.