This unique bolt can be tightened in either direction. Watch in the videos how this new bolt is constructed.
The Russian engineer Oleg Pevtsov that designed this very unique bolt, said:
“I was able to cut it with a cutter on a lathe, a multi-pass (ten passes) thread in two directions, both right and left on the same bolt at once.”
“Carved a threaded nut in two directions as you asked. It turned out very cool. Bolt with metric thread in two directions. Two nuts, one with a left-hand thread and the other with a right-hand thread in ten rounds.”