Intro to Millwright Practice Exam

Which tool resembles a screwdriver but features a socket on the end?

1. Nut Driver

2. Torque Wrench

3. Ratcheting Screwdriver

4. Pry Bar

The correct answer is: Nut Driver

A tool that resembles a screwdriver but has a socket on the end is indeed known as a nut driver. The nut driver is specifically designed for turning nuts and bolts, making it particularly useful in situations where traditional screwdrivers cannot provide the necessary grip on fasteners with a hexagonal shape. Unlike a standard screwdriver, which has a blade for gripping slotted or Phillips screws, the nut driver incorporates a hollow, socketed end that fits over the nut or bolt head. This design allows the user to apply effective torque while maintaining a secure fit, preventing slipping and possible damage to the fastener. Other tools, such as a torque wrench, focus on applying a specific amount of torque to a fastener and typically do not resemble a screwdriver in terms of shape or usage. A ratcheting screwdriver allows for quick rotation of screws but generally does not feature a socket design, instead relying on interchangeable bits. A pry bar is used for leverage and does not serve the function of fastening or unfastening nuts or bolts at all. Thus, the utility and design characteristics of the nut driver make it the correct answer in this context.