Abstract: An improved drill accessory apparatus primarily adapted for selective connection to a power tool such as an electric drill to provide additional functions for such a power tool such as a screwdriving function. The apparatus thereby enables a user to first drill a hole and then drive a screw into that drilled hole with the same tool and without requiring removal of a drill bit first used to drill the hole. More significantly, the present apparatus provides the aforementioned accessory feature while overcoming certain safety disadvantages present in the most relevant prior art. One such safety-directed improvement of the present apparatus is derived from a structural design which uses a spring positioned entirely within a housing thereby precluding safety risks that might otherwise be encountered if an external spring were employed such as that shown in the prior art.