The GRACO 120637 Nut is a genuine OEM replacement part designed for use in GRACO spray equipment. Its material is not specified in available sources, but it is intended to secure or fasten components within GRACO sprayers or related equipment, ensuring proper assembly and reliable operation. Key Features: Nut, Dome 120637 Genuine OEM part for reliable fit and performance Easy to install and replace Supports equipment integrity and safety Applications:Used in the assembly and maintenance of GRACO spray equipment, ensuring secure fastening of components. Installation Notes: Using genuine GRACO parts like the 120637 Nut ensures proper fit, function, and safety of your equipment, reducing the risk of leaks or malfunctions. Always refer to the equipment manual for specific installation instructions Ensure the equipment is depressurized and disconnected from power before replacing parts Inspect the nut and mating surfaces for wear or damage before installation Tighten to the recommended torque to avoid over-tightening or stripping