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.
Potential Benefits of Hex Keys
Using hex keys offers unprecedented benefits to users, such as:
- They are versatile tools made of sturdy materials.
- Lightweight and simple design.
- Easy to use, even in hard-to-access areas.
- Ergonomic and comfortable handle.
- Come in varied materials, designs, and shapes.
- Minimal maintenance needs and are cost-effective.
Available Types of Hex Keys
There are various types of hex keys for delicate and precise tasks. Some of the popular hex key types include:
- L-Shaped Hex Keys – These are the most commonly used L-shaped hex keys, with the same head size on each end. Their integral arms provide easy access and more torque to the keys in either orientation. They are available in sets of different sizes.
- T-Shaped Hex Keys – These keys feature a T-shaped ergonomic handle that provides higher torque on stubborn fasteners. T-handle hex keys effortlessly rotate the hex key and are widely used.
- Folding Hex Keys – These keys come in a set to differentiate between Allen key sizes in a single pocket or pouch. They fold neatly into a compact handle, are stored easily, and fit comfortably.
- Metric and Imperial Hex Keys – Hex keys come in both metric and imperial sizes, allowing flexibility to choose the right type based on the fasteners' measurements.
- Ball-End Hex Keys – These Allen keys have a ball-shaped end used at an angle when working in tight spaces or to access screws at odd angles.
- Security Hex Keys – These keys feature a unique or non-standard shape, making them harder to tamper with or remove without the corresponding tool. They are commonly used in applications with security concerns.
Other Types Include
- P-handle Hex Keys
- Cranked Hex Keys
- Bit Hex Keys.
Hex-Plus and Ball-End Hex Keys: The Difference
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.
Typical Applications of Hex Keys
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:
- Electronics
- Machinery
- Plumbing Repairs
- Automotive Industry
- Furniture Assembly and Repairs
- DIY Projects
