Patent ID: 7730812

Claim:
A system comprising: a screw head for a screw, the screw head having a hexalobular slot in its upper surface, wherein the screw head further comprises: an upper peripheral wall, a tapered recess, and a sloping transition surface tapered at a larger angle with respect to the axis of the screw than the upper peripheral wall; and a tool for use with the screw head, the tool having: a lower engagement section, an upper engagement section, and an angled surface extending between the lower engagement section and the upper engagement section, the lower engagement section of the tool being tapered at the same angle as the tapered recess of the screw head, so that the lower engagement section of the tool achieves press engagement to make a stick fit connection with the tapered recess of the screw head, the angled surface of the tool being tapered at a smaller angle with respect to the axis of the screw than the sloping transition surface of the screw head such that the angled surface of the tool does not contact the sloping transition surface of the screw head when the lower engagement section of the tool is fully inserted into the tapered recess of the screw head.