| 主权项 |
1. An improved fastening system suitable for use with building elements comprising;
a screw element comprising a shank member having a first end, a second end and a thread positioned along at least a portion of the shank member intermediate the first and second ends, the screw element further comprising a piercing tip at the first end of the shank member and a head at the second end of the shank member, the head of the screw comprising a first recess for releasably engaging an instrument of rotation and a second recess extending from the first recess into the shank member for releasably engaging a shank portion of a cover member; and a cover member comprising a capping portion having a first face, a second face and an edge member intermediate the first face and second face, the cover member further comprising a shank portion extending substantially orthogonally from the first face of the capping portion remote from the second face, the shank portion being releasably engagable with the second recess of the screw element. |
