An Allen wrench (also called an Allen key) is just a brand name for what is more generally called a hex key. This is an ...

We may receive a commission on purchases made from links. The Allen wrench, also known as a hex key, is a L-shaped hand tool with hexagonal (six-sided) ends. It all started with a Connecticut inventor ...

Because of its small size, high torque strength, and recessed installation, the hex socket screw is a great alternative to regular bolts. The main tool used to tighten or loosen hex socket screws is ...