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Hex keys, also called Allen keys or hex wrenches, are small handheld tools designed to tighten or loosen compatible hex fasteners, including screws and bolts. These multipurpose hex keys typically feature an ergonomic handle (for rotations and torque) and hexagonal tip (with six contact points) that easily fits into sockets in corresponding fasteners. Allen keys are made of rugged steel and are available in a single key piece or a hex key set in metric, imperial, or both sizes. A must-have addition to a toolbox, a hex key finds versatile applications in various facilities due to its varied lengths, easy use, types, and designs.
Using hex keys offers unprecedented benefits to users, such as:
There are various types of hex keys for delicate and precise tasks. Some of the popular hex key types include:
Other Popular Types Include:
These keys can effectively tighten or loosen fasteners of compatible sockets. A hex-plus profile provides a more contact surface and reduces the notching effects and the risk associated with fastener recess. On the other hand, the hexagon key's ball end allows easy sliding insertion into a socket head, providing a convenient way to feel the keys, especially in hard-to-reach areas.
Allen keys are widely used in everyday activities and other applications where fasteners with hexagonal heads are used. Some of the hex key's typical applications in various sectors include: