Two Way Bolt
This bolt is amazing—the threads go in two directions, with one part turning to the left and the other to the right. This means the nut can be tightened in either direction. The purpose of this design is to prevent the nut from loosening when you use your two nuts. First, one nut is screwed on in one direction, and then another is screwed on in the opposite direction. In this way, the nuts lock each other in place.
#interesting #interestingfacts #uniquefacts #satisfying