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A fastening device for securing adjacent, parallel boards to a transverse structure, including a top plate having flanges to fit into slots cut into the sides of boards, a center hole in the top plate to accommodate a screw or nail, and top and bottom tabs to provide uniform spacing and to support t

A fastening device for securing adjacent, parallel boards to a transverse structure, including a top plate having flanges to fit into slots cut into the sides of boards, a center hole in the top plate to accommodate a screw or nail, and top and bottom tabs to provide uniform spacing and to support the fastener during attachment to the support structure.

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1. A fastening device for securing boards to a support structure, said device comprising:a first flange joined with a coplanar second flange and adapted to be disposed in a generally horizontal position in use, said flanges extending laterally outwardly in opposite directions from a longitudinal axi

1. A fastening device for securing boards to a support structure, said device comprising:a first flange joined with a coplanar second flange and adapted to be disposed in a generally horizontal position in use, said flanges extending laterally outwardly in opposite directions from a longitudinal axis of said device at the juncture of said flanges,said flanges having an opening therein extending downwardly therethrough at a central portion of said axis for receiving an anchoring device,first and second top tabs extending upwardly from said axis and disposed on opposite sides of said opening,first and second bottom tabs extending downwardly from said axis and disposed on opposite sides of said opening, anda ridge extending downwardly from said longitudinal axis and between said bottom tabs. 2. The fastening device of claim 1 wherein said flanges include convex, curved outer edges. 3. The fastening device of claim 1 wherein said flanges include straight edges, parallel to said longitudinal axis. 4. The fastening device of claim 1 wherein said flanges have sufficient rigidity to resist deformation during fastening. 5. The fastening device of claim 1 wherein said top tabs have a substantially rectangular elevational profile. 6. The fastening device of claim 1 wherein said top tabs have a substantially triangular elevational profile. 7. The fastening device of claim 1 wherein said top tabs have a substantially semi-circular elevational profile. 8. The fastening device of claim 1 wherein said opening extends downwardly through said ridge. 9. The fastening device of claim 1 wherein said bottom tabs include downwardly extending walls, a portion of said walls proximate to said opening being relieved as said walls extend downwardly from said longitudinal axis, thereby reducing potential interference between said tabs with the body of an anchoring device received by said opening upon attachment of said fastening device to a substructural element. 10. A fastening device for securing boards to a support structure, said device comprising:a first flange joined with a coplanar second flange and adapted to be disposed in a generally horizontal position in use, said flanges extending laterally outwardly in opposite directions from a longitudinal axis of said device at the juncture of said flanges,said flanges having outer edges shaped to substantially fit the curvature of a receiving slot in a board, and having an opening therein extending downwardly therethrough at a central portion of said axis for receiving an anchoring device,first and second top tabs extending upwardly from said longitudinal axis and disposed on opposite sides of said opening,first and second bottom tabs extending downwardly from said longitudinal axis and disposed on opposite sides of said opening, anda ridge on said flanges extending downwardly from said longitudinal axis and between said bottom tabs. 11. The fastening device of claim 10 wherein said bottom tabs include downwardly extending walls, a portion of said walls proximate to said opening extending outwardly and away from said opening as said walls extend downwardly from said flanges, thereby reducing potential interference between said tabs with the body of an anchoring device received by said opening upon attachment of said fastening device to a substructural element. 12. A deck board fastening device for securing deck boards to a support structure, said device comprising:a first flange joined with a coplanar second flange and adapted to be disposed in a generally horizontal position in use, said flanges extending laterally outwardly in opposite directions from a longitudinal axis of said device at the juncture of said flanges,said flanges having outer edges shaped to substantially fit the curvature of a receiving slot in a board, and having an opening therein extending downwardly therethrough at a central portion of said axis for receiving an anchoring device,first and second top tabs extending upwardly from s aid longitudinal axis and disposed on opposite sides of said opening;first and second bottom tabs extending downwardly from said longitudinal axis and disposed on opposite sides of said opening, said bottom tabs including downwardly extending walls, a portion of said walls proximate to said opening extending outwardly and away from said opening as said walls extend downwardly from said flanges, thereby reducing potential interference between said tabs with the body of an anchoring device engaged with said opening upon attachment of said deck board fastener to a deck substructural element; anda ridge on said flanges extending downwardly from said longitudinal axis and between said bottom tabs.