The Watts Fluidair Cup Screw M5 is designed for use with 10, 15, 18, and 20 mm fittings, providing a secure fastening solution in pneumatic applications. Made from high-quality materials, this screw offers durability and resistance to corrosion, ensuring long-lasting performance. Its M5 threading allows for compatibility with a variety of components, making it a versatile choice for assembly and maintenance tasks. This cup screw meets industry standards for quality and reliability, making it an essential component for effective fluid management in various environments.