Wrench

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Gedore No. 7 combination wrenches 6–19 mm

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Wrench is a tool used for providing grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning. In Commonwealth English (excluding Canada), 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).

Types of Wrenches

There are many types of wrenches, each serving a specific purpose. Some of the most common include:

• Adjustable Wrench: A wrench with a movable jaw that can be adjusted to fit different sizes of bolts and nuts.
• Socket Wrench: A type of wrench that uses separate, removable sockets to fit many sizes of nuts and bolts.
• Torque Wrench: A tool used to precisely apply a specific torque to a fastener such as a nut or bolt.
• Allen Wrench (Hex Key): A tool used to drive bolts and screws with hexagonal sockets in their heads.
• Pipe Wrench: A type of wrench designed for turning threaded pipes and fittings.
• Combination Wrench: A wrench with an open-end on one side and a ring spanner on the other.
• Ratcheting Wrench: A wrench that incorporates a ratcheting mechanism to allow the wrench to turn a fastener in one direction without removing the wrench from the fastener.

History

The concept of the wrench dates back to the medieval period, but significant development occurred in the 19th century with the industrial revolution. The need for standardization and efficiency in manufacturing led to the creation of various types of wrenches.

Usage

Wrenches are used in a wide range of applications, from automotive repair to construction, plumbing, and assembly line production. The choice of wrench depends on the specific task, the size and type of fastener involved, and the space available for using the tool.

Maintenance

Proper maintenance of wrenches involves regular cleaning, inspection for wear or damage, and proper storage. Wrenches should be kept free of rust and corrosion to ensure longevity and reliable performance.

Safety

When using wrenches, it's important to select the correct size and type of wrench for the job to prevent damage to the fastener or tool and to reduce the risk of injury. Wearing safety goggles is recommended to protect the eyes from flying debris.

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