Which tool is designed for turning hex and square nuts and bolts?

• A. Curved Claw Hammer
• B. Combination Wrench
• C. Circular Saw
• D. Phillips Screwdriver

Answer: (B)

Turning hex and square nuts and bolts calls for a tool that grips the flat faces and transmits torque without slipping. A combination wrench does exactly that: one end is open for quick positioning, the other end is a box (closed) end that fully surrounds the nut or bolt head. This dual design lets you apply steady torque, reach tight spaces, and keep the corners from rounding off. The open end handles many fasteners in awkward spots, while the box end gives a secure, slip-resistant grip when more leverage is needed.

Other options aren’t suitable for turning fasteners. A curved claw hammer is built for driving nails and can slip or deform a nut or bolt if used to turn it. A circular saw is a cutting tool with no function for engaging hex or square fasteners. A Phillips screwdriver is meant for cross-head screws and cannot engage hex or square nuts, so it would fail to fit and could damage the fastener.