856A3496G04 is a precision aerospace fixture compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine turbine section maintenance.It serves as a turbine rotor disk positioning fixture, specialized in accurate fixing and centering of turbine disks during MRO disassembly, repair and reassembly. It ensures strict concentricity and axial position tolerances, eliminates installation deviation or runout, prevents uneven stress distribution and vibration of turbine blades under high-speed rotation, and avoids blade rubbing, fatigue damage and gas leakage in the hot section.Made of high-strength heat-resistant alloy steel, it resists high temperature and mechanical impact, working stably at -55℃ to 390℃. Weighing 1.5kg, it features a secure locking mechanism and precision locating benchmarks, enabling efficient, standardized assembly operations with consistent accuracy. It is a vital tool to guarantee turbine rotor integrity and overall engine operational safety, efficiency and service life.