A pump comprising: a molded stator that includes a pilot hole component that has a plurality of leg portions having pilot holes for attachment of a pump unit to the molded stator and pilot holes for attachment of the pump to a unit in which the pump is installed, wherein the pilot hole component is embedded in the molded stator, and the pump unit that includes a plurality of screw holes near an outer circumferential portion thereof, wherein the pump unit and the molded stator are attached to each other by self-tapping screws screwed into the pilot holes that are exposed in the molded stator through the screw holes of the pump unit so as to form the pump, the plurality of leg portions of the pilot hole component are connected to one another by a thin connecting portion, the pilot holes for attachment of the pump unit are exposed in an end plane located at an end in the axial direction of the molded stator, and serve as pilot holes when the pump unit comprised by the pump is attached to the molded stator with the self-tapping screws, the pump being characterized in that at least one of the leg portions of the pilot hole component extends by a predetermined length compared to the other leg portions toward a side opposite to a side to which the pump unit is attached to the molded stator, the pilot holes formed in the at least one of the leg portions extend through the at least one of the leg portions and through axial end planes of the at least one of the leg portions, are exposed in the other end plane of the molded stator, and can serve as pilot holes for attachment of the pump to a unit in which the pump is installed. a molded stator that includes a pilot hole component that has a plurality of leg portions having pilot holes for attachment of a pump unit to the molded stator and pilot holes for attachment of the pump to a unit in which the pump is installed, wherein the pilot hole component is embedded in the molded stator, and the pump unit that includes a plurality of screw holes near an outer circumferential portion thereof, wherein a pilot hole component that has a plurality of leg portions having pilot holes for attachment of a pump unit to the molded stator and pilot holes for attachment of the pump to a unit in which the pump is installed, wherein the pilot hole component is embedded in the molded stator, and the pump unit that includes a plurality of screw holes near an outer circumferential portion thereof, wherein the pump unit and the molded stator are attached to each other by self-tapping screws screwed into the pilot holes that are exposed in the molded stator through the screw holes of the pump unit so as to form the pump, the plurality of leg portions of the pilot hole component are connected to one another by a thin connecting portion, the pilot holes for attachment of the pump unit are exposed in an end plane located at an end in the axial direction of the molded stator, and serve as pilot holes when the pump unit comprised by the pump is attached to the molded stator with the self-tapping screws, the pump being characterized in that at least one of the leg portions of the pilot hole component extends by a predetermined length compared to the other leg portions toward a side opposite to a side to which the pump unit is attached to the molded stator, the pilot holes formed in the at least one of the leg portions extend through the at least one of the leg portions and through axial end planes of the at least one of the leg portions, are exposed in the other end plane of the molded stator, and can serve as pilot holes for attachment of the pump to a unit in which the pump is installed. the plurality of leg portions of the pilot hole component are connected to one another by a thin connecting portion, the pilot holes for attachment of the pump unit are exposed in an end plane located at an end in the axial direction of the molded stator, and serve as pilot holes when the pump unit comprised by the pump is attached to the molded stator with the self-tapping screws, the pump being characterized in that at least one of the leg portions of the pilot hole component extends by a predetermined length compared to the other leg portions toward a side opposite to a side to which the pump unit is attached to the molded stator, the pilot holes formed in the at least one of the leg portions extend through the at least one of the leg portions and through axial end planes of the at least one of the leg portions, are exposed in the other end plane of the molded stator, and can serve as pilot holes for attachment of the pump to a unit in which the pump is installed.