A turntable for a storage disk drive apparatus includes a plate member made of a ferromagnetic material and a central resin member arranged at the center of the plate member and formed into a single member by injection-molding a resin. The plate member includes a peripheral plate portion and a central plate portion positioned higher than the peripheral plate portion. The central plate portion includes a plate center hole defined at the center of the plate member. The central resin member includes a resinous cylinder portion extending through the plate center hole and defining a resin central through-hole, a disk guide portion arranged to guide a disk center hole, and a resinous connector portion arranged above the central plate portion to interconnect the resinous cylinder portion and the disk guide portion.