These are mostly found in bicycle repair applications.

They are often referred to as multi-purpose tools because the open end of the Allen wrench is used to loosen and tighten bolts and nuts in small spaces, while the box-end provides a firm grip around them. The box-end Allen wrench is available with a closing ring for various diameters depending on the size. The combination Allen wrench is designed with double-ends that is one side has a box end and the other side has an open end. If you want to have an adjustable Allen wrench then you will need to select according to the size of the wrench. In addition, also used in applications such as plumbing, electric, self-assembly furniture, and car repair. These tools are perfect for loosening or tightening angled nuts or screws. These Allen wrenches are available in sizes of 200mm, 300mm, and 250mm. This is a handy tool also known as a network wrench. L-style Allen WrenchĪdjustable Allen wrenches have a movable jaw to adjust the size of the wrench and a fixed jaw point that is positioned at the top of the wrench. Read Also: The List of 30 Different Types of Pliers: How To Use Them? 1. Types of Allen Wrenchesįollowing are the types of Allen wrenches: These tools are commonly used to fasten hex-type screws to wood, metal, and even plastic. Allen wrenches are designed according to the size of the socket and are manufactured with very tight tolerances.

The tool is rotated by holding it with its long handle, producing a greater torque at the tip of the shorter handle. These hexagonal rods are bent to 90º, forming two sides of unequal length, like the alphabet letter “L”. They are usually made of hardened steel hexagonal rods with blunt ends that fit into equally sized screw sockets.

An Allen wrench is a driver tool used for turning bolts or screws that have internal hexagonal sockets.

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