An improved drill tip 10 for a foundation pile 28 includes a pile attachment structure 12 and a soil penetrating body 14 depending from the attachment structure, the soil penetrating body having a plurality of circular stepped flights 38 forming the shape of a descending continuous conic spiral and having a continuous spiral-shaped lower face 44 and an undercut outer face 46, the soil penetrating body including a lower end 48 having an inverted generally conical center structure 51 surrounded by a plurality of symmetrically distributed downwardly extending soil disturbing blades 52.