The 500091 Nut is a genuine OEM replacement part designed to securely fasten the detergent injector assembly, ensuring consistent and accurate chemical flow in dishwashers, glass washers, and similar equipment.  Manufactured to precise factory specifications, this OEM nut supports optimal performance, reliability, and proper operational standards for your detergent injector system.  This part is compatible with popular models including DSP3, F92-EK, and 050F. It is specifically designed for use in detergent injector applications and serves as a direct replacement to maintain safe and efficient equipment operation.