The present invention pertains to an apparatus for fastener inspection and sorting mainly including an auxiliary device disposed beside the turntable and attached to an inspecting machine. The device has a support base located adjacent to the turntable and a driving assembly mounted on the base. In this manner, the inspecting machine captures defect signals of each object in different orientations by means of the device driving the machine to automatically revolve round the object or by the magnetic attraction assisting in spinning the object when the machine is immobile, thereby transmitting integral signals to the determining machine for an accurate determinations and hence increasing the quality of the inspection and sorting.