856A3265G04 is a precision aerospace machining fixture, compliant with AS9100D quality standards and FAA/EASA regulations, designed for CFM56 series aircraft engine maintenance.

It serves as a positioning fixture for the No.6 bearing inner race, used to fix and align the bearing inner race during engine overhaul and component machining. It ensures the bearing maintains precise positional accuracy, which is essential for the stable operation of the engine's high-pressure turbine area, avoiding abnormal vibration, increased wear, or power loss that would affect engine performance during flight.

Made from high-strength, wear-resistant alloy steel, it resists deformation under high machining pressure, and has a dedicated design for matching bearing specifications. Weighing 0.72kg, it allows quick installation and removal in MRO work, a critical tool for engine bearing maintenance accuracy.