The Ermeto 533100 is a genuine Parker Ermeto Original (EO/EO-2) series union nut, engineered for robust and reliable connections in high-pressure hydraulic systems. Manufactured from durable, zinc-plated steel, this nut is a fundamental component for assembling metric tube fittings according to DIN 2353 standards. It provides a secure, leak-free seal when paired with appropriate cutting rings and body components, ensuring optimal performance in a wide range of industrial and mobile applications. Specific dimensions and thread sizes vary by individual part number within the 533100 series.