The DIN 50 thread is a 50mm standardized screw thread design developed by the German Institute for Standardization (Deutsches Institut für Normung -- i.e., ”DIN”) and is commonly used on jerricans and large containers, particularly in Europe and Asia. This thread size is designed to provide a secure, leak-resistant seal, making it ideal for transporting liquids such as chemicals, oils, and food-grade products.

DIN 50 caps are typically equipped with features like tamper-evident seals or venting options to suit a variety of industrial and commercial needs. Its larger diameter allows for easier pouring and filling, especially for viscous liquids. The standardization ensures compatibility with a wide range of caps and dispensing systems, offering convenience and reliability in demanding environments.