What is the primary function of a crescent wrench?

• A. Loosen or tighten a nut or bolt
• B. Cut wire
• C. Drill holes
• D. Hammer surfaces

Answer: (A)

A crescent wrench is an adjustable wrench designed to turn fasteners with hex heads, such as nuts and bolts. Its key feature is an adjustable jaw moved by a screw, letting you fit different sizes with one tool. When you grip a nut or bolt and turn the handle, torque is applied to loosen or tighten it. This versatility across various fastener sizes, plus usefulness in tighter spaces, is what makes it the go-to choice. It isn’t intended for cutting wire, drilling holes, or hammering surfaces, which are tasks for wire cutters, a drill, and a hammer respectively.