What is the German equivalent of "wrench"?

The German equivalent of "wrench" is "Schraubenschlüssel." This term specifically refers to a tool used for gripping and turning nuts, bolts, or other fasteners, which is precisely what a wrench does in English. The word itself breaks down into "schraube" meaning "screw" and "schlüssel" meaning "key," indicating its function in adjusting or securing fittings.

In comparison, while "Schlüssel" translates to "key" in English, it does not convey the specific tool context of a wrench. "Hammer" refers to a different tool entirely, meant for striking. "Bolzen" translates to "bolt," which is a type of fastener rather than a tool. Thus, "Schraubenschlüssel" accurately captures both the meaning and the practical use of a wrench within the realm of tools.