Half shaft for drive axle

The utility model discloses a half shaft for a drive axle. The half shaft for the drive axle comprises a half shaft body, a boss is arranged at a spline end of the half shaft body, and a magnet is disposed on the boss. By means of the half shaft for the drive axle, the boss with the magnet is added under the condition that the function of transmitting torque by the half shaft is not changed, the magnet attracts abraded scrap iron in a differential mechanism, the half shaft is drawn out regularly to remove the scrap iron, therefore, abnormal abrasion of parts in the differential mechanism between wheels is reduced, faults of the differential mechanism are reduced, and performances of an axle assembly are improved.