Red Seal Heavy Duty Equipment Technician Practice Exam

Which of the following tools is essential for tightening bolts during maintenance?

1. Socket set

2. Adjustable wrench

3. Tape measure

4. Level

The correct answer is: Socket set

A socket set is essential for tightening bolts during maintenance because it provides a secure and efficient way to apply torque to fasteners. The design of a socket allows for a snug fit over the head of a bolt or nut, which helps prevent rounding off the corners that can occur when using tools not specifically designed for that purpose. Sockets come in various sizes and types, including standard and deep sockets, making them versatile for different bolt sizes and applications. Using a socket set often results in better leverage and torque application compared to using an adjustable wrench. While an adjustable wrench can be useful in certain situations, it does not grip the fastener as securely, which can lead to slippage and potential damage to the bolt. A tape measure and a level are not suitable for tightening bolts, as they serve entirely different purposes related to measurement and leveling rather than fastening.