The Hi-Torque® fastener recess was developed to meet the need for a shallow recess that could be used in reduced head fasteners. MRO Tools has a large selection of Hi-Torque® Bits, Hi-Torque® Drivers and Hi-Torque® Driver Replacement Wheels.In the aerospace industry, aircraft with thin skins and other applications requiring high clamping loads, reduced head heights, and where access is restricted are well suited for the Hi-Torque® Recess. The unique undercut feature of the Hi-Torque® recess, allows the special Hi-Torque® driver to lock into the recess without having to apply end load on the driver to keep it engaged in the Hi-Torque® recess.