| 摘要 |
<p>Abstract: A screw fastener including: an elongate shank (11); a head (5) located at one end of the shank, and a drill point (7) located at an opposing end of the shank; wherein the head has a maximum head diameter that is less than the minimum head diameter of a head of a conventional screw fastener of the same gauge or shank diameter; and wherein the head includes a drive recess having a size and depth greater than the drive recess that would be used in the head of a conventional screw head of this head diameter. ILI Ile -0-</p> |
