Wrench facts for kids

A set of metric wrenches, open at one end, box/ring at the other (see magnified version)). This type is commonly known as a “combination” wrench

A wrench (or spanner) is a tool used to provide grip and turn nuts and bolts, and similarly shaped objects.

In British English, spanner is the standard term. The most common shapes are called open-ended spanner and ring spanner. The term wrench is generally used for tools that turn non-fastening devices (e.g. tap wrench and pipe wrench), or may be used for a monkey wrench – an adjustable spanner.

What a wrench or spanner does is to grip. Pulling or pushing the handle to rotate gives mechanical advantage. It applies torque to turn objects – usually rotary fasteners, such as nuts and bolts – or keep them from turning.

Adjustable wrenches

An adjustable spanner, or adjustable wrench, or crescent wrench in American English, is a tool. It may move its jaw to rotate nuts or bolts of different sizes. It was invented by Edwin Beard Budding (1795–1846), who also invented the lawnmower.

Images for kids

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  Wheel-lock gun of Sigismund III Vasa: The original spanner had a square hole for turning the shaft (r.) of the wheel, which tensioned the mainspring. See also § External links

See also

In Spanish: Llave (herramienta) para niños