Assembly method of aero-engine shaft nut

The invention provides an assembling method for an aero-engine shaft nut, and relates to the technical field of aero-engines. The assembling method for the aero-engine shaft nut specifically comprises the following steps that S1, the nut is selected and matched, the engine shaft nut and a bolt with the appropriate size are selected according to the model of an aero-engine, whether the shape and size precision, related to assembling, of the nut and the bolt are qualified or not is checked, whether deformation and damage exist or not is checked, S2, assembling centering is conducted, S3, lubricating agent smearing is conducted, and S4, torque loading is conducted. S5, bolt length detection; and S6, nut detection. A pneumatic or electric screw driver is adopted to reinforce the nut, two-step loading is adopted, thread bonding caused by too high screwing-in speed and sharp temperature rise when the nut is assembled is avoided, meanwhile, the pneumatic or electric screw driver is adopted to reinforce the nut, and