Allen screw

Allen Screw

An Allen screw is a type of screw that is driven by an Allen wrench, also known as a hex key. The name "Allen" is a registered trademark, originated by the Allen Manufacturing Company of Hartford, Connecticut circa 1910, and currently owned by Apex Tool Group, LLC. Its genericized use is discouraged by this company. The standard generic name used in catalogs and published books and journals is "hex key".

Design

The Allen screw is characterized by a hexagonal recess in the screw head. This design allows for a higher torque to be exerted than a similarly sized conventional screw head. The hexagonal drive of an Allen screw offers a good trade-off between ease of use and the ability to withstand high torque loads.

Uses

Allen screws are used in a variety of applications, including machinery, vehicles, bicycle components, and furniture. They are particularly popular in the electronics industry due to their compact size and the fact that they can be driven with a simple, inexpensive tool.

Types

There are several types of Allen screws, including socket head cap screws, button head socket screws, and flat head socket screws. Each type has a different head shape and is used for different applications.

Advantages and Disadvantages

The main advantage of Allen screws is that they allow for a higher torque to be applied than with most other types of screws. This makes them ideal for use in applications where a strong, secure connection is required. However, one disadvantage is that if the hexagonal recess becomes worn out or stripped, the screw can become difficult to remove.

See Also

• Screw
• Hex key
• Torque
• Fastener

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