| 摘要 |
A torque transmitting or coupling arrangement for a fastener drive system or the like, wherein the respective externally configured and internally configured components include a body having an axis in which the body has a modified polygonal cross section defined by a perimeter wall. A polygonal central portion positioned within the perimeter wall has an area less than the area of the modified polygonal cross section. A drive wall which forms a portion of the perimeter wall extends on a plane from a proximal end outwardly from the polygonal central portion to a distal end. A first outer wall forming another portion of the perimeter wall has a proximal end joining the distal end of the drive wall at an angle and a distal end terminating on the perimeter wall. The system includes a fastener driver, a threaded fastener and a forming tool for forming a recess in the fastener.
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