Intro to Millwright Practice Exam

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Prepare for the Millwright Exam with a comprehensive set of flashcards and multiple-choice questions. Each question includes hints and explanations. Get ready to succeed on your exam!

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What is the function of a knurled screw on an adjustable wrench?

To lock the jaws in place
To widen or narrow the opening between the jaws
To provide better grip
To change the direction of tool movement

The correct answer is: To widen or narrow the opening between the jaws

The function of a knurled screw on an adjustable wrench is primarily to allow for the adjustment of the opening between the jaws of the wrench. By turning the knurled screw, the user can easily widen or narrow this opening to fit the specific size of the nut or bolt they are working with. The knurled texture provides a textured grip, enabling users to quickly and securely make adjustments, facilitating efficient use of the tool. This design feature enhances the versatility of the adjustable wrench, making it suitable for a wide range of fasteners without the need to carry multiple fixed-size wrenches. Adjusting the jaws to the correct size helps prevent slipping and rounding off fasteners during use, which is essential for effective and safe operation.