Kuusiokoloruuvinväännin

Kuusiokoloruuvinväännin, also known as a hex key or Allen wrench, is a simple but widely used tool. It is a metal rod with a hexagonal cross-section, bent at a 90-degree angle. The tool is designed to turn bolts and screws with hexagonal sockets in their heads. The name "kuusiokoloruuvinväännin" translates directly to "six-hole screw turner" in Finnish, referring to the six sides of the hexagonal shape.

These tools are commonly made from steel, often alloy steel for increased strength and durability. They come in a variety of sizes, typically measured by the diameter of the hexagonal tip. The metric system is most commonly used for their sizing. One end of the tool is usually inserted into the hexagonal socket of the fastener, and the other end is used to apply torque, either by hand or with a power tool adapter. The bent shape allows for leverage and ease of use, especially in confined spaces.

Kuusiokoloruuvinvääntimet are used across numerous industries and in everyday life. They are essential for assembling furniture, bicycles, machinery, and electronics. Their popularity stems from their simplicity, effectiveness, and the widespread adoption of hexagonal socket fasteners. Maintenance and repair tasks frequently rely on this type of tool.