In 1112, Cuno de Hachenfels cropped up in a document about an exchange of holdings between Disibodenberg Monastery and Provost Richard von Liebfrauen in Mainz.

In 1140, Emicho VI's two sons formed the lines of the Waldgraves and Rhinegraves (Konrad) and the Raugraves (Emich VII).

The year 1361 is important in Schmidthachenbach's history, for this date was to be found on the lintel over the old town hall's door.

In 1618, the Thirty Years' War broke out, and locally, it gave rise to “The Legend of the Sunken Rider”.

Beginning in 1795, Schmidthachenbach lay under French rule and became a mairie (“mayoralty”) in the canton of Grumbach, the arrondissement of Birkenfeld and the Department of Sarre.

That same year, Johannes Bückler, commonly known as “Schinderhannes”, attacked the Antesmühle, an outlying mill in Schmidthachenbach in the Antes valley.

In 1815, in the wake of Napoleon’s downfall and the Congress of Vienna, French rule ended and Schmidthachenbach found itself in the Duchy of Saxe-Coburg-Saalfeld while remaining a mairie – although now called a Bürgermeisterei, the German word for the same thing – within the constituent territory of the Principality of Lichtenberg with Sankt Wendel as its capital.

In the course of administrative restructuring in Rhineland-Palatinate, the Amt of Weierbach was dissolved and Schmidthachenbach was grouped into the Verbandsgemeinde of Herrstein.

[1] The municipality's arms might be described thus: Per pale Or a barrulet sable between an anvil in perspective, the horn to sinister chief, of the same and an oakleaf palewise slipped proper, and countercompony azure and Or.

[7] The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:[8] Running west of the municipality is Bundesstraße 41.