A similar mechanism is at work in the wedge-locking washers. The two halves of the washer have interlocking wedges, the angle of which exceeds the pitch of the bolt threads. As the bolt is ...

Self-locking threads easily convert a rotational ... The simplicity of screw threads and the ubiquity of threaded fasteners belie the physics behind these mechanisms, but understanding the basics ...

If you can do without Wi-Fi connectivity, the Wyze Lock Bolt is a phenomenal value. The onboard fingerprint reader and the ability to establish temporary PIN codes from afar are particularly ...

But if you aren’t interested in completely replacing the lock you already own, keys and all, you can turn your existing deadbolt into a smart lock with one of August’s devices. The latest ...