Firefighter Practice Exam

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Practice this question and more.

Which of the following wrenches is not adjustable?

Crescent wrench
Box wrench
Monkey wrench
Stilson wrench

The correct answer is: Box wrench

A box wrench is characterized by a closed loop with a specific size that fits on a particular nut or bolt head, which means it does not offer the ability to adjust to different sizes. It typically comes in various sizes to fit different fasteners, providing a secure grip and reducing the risk of slipping. In contrast, the other types of wrenches mentioned, such as the crescent wrench, monkey wrench, and Stilson wrench, all feature adjustable jaws or mechanisms that allow them to grip fasteners of varying sizes. Understanding the different types of wrenches and their functionalities is essential for effective tool selection during various tasks in firefighting and maintenance work.