An ultrasonic load measurement transducer is mated with a thread-forming
fastener to provide a load indicating thread-forming fastener that can be
used for the precise and reliable assembly of critical bolted joints,
such as those in the automobile and aerospace industries, among others.
Steps can then be taken to accurately measure and control the load in the
thread-forming fastener during tightening, and to inspect the load in the
thread-forming fastener after assembly. A similar result can be achieved
for a thread-locking fastener by mating an ultrasonic transducer with the
thread-locking fastener assembly.