1.   Loose mounting bolts can contribute to vibrations that will shorten the life of the mower.

2.   Southwest, however, discovered a loose bolt on one of its aircraft.

3.   In the worst case scenario, the loose bolt could make it difficult for drivers to steer, it said.

4.   Schumacher, whose accident is believed to have been caused by a loose bolt on the rear brakes, plowed into a tire wall at high speed.