"castle nut" in German castle nut Kronenmutter Sechskantkronenmutter Detailed translations for "castle nut" castle nut 1. technology castle nut(also: castellated nut, hexagon slotted and castle nut) die Kronenmutter{feminine} 2. other castle nut(also: hexagon-slotted nut) die Sechskantkronenmutter{feminine}