Fastener for fragile boards

Abstract

An improved nail fastener for boarding nails and particularly to a nail fastener adopted for use on fragile boards and panels such as gypsum boards mainly comprises a shank, a flange formed on one end of the shank, a drill bit formed on another end of the shank, a screw thread section formed on the peripheral surface of the shank and a center hole formed in the center of the shank for accommodating a screw nail. The shank has at least two debris troughs formed thereon. Each debris trough is extended diagonally from a blade nib of the drill bit to a front section of the screw thread section. The debris troughs have a through hole formed on a rear section thereof running through the center hole such that when the nail fastener is nailed into a board, board debris being generated is discharged through the debris troughs into the center hole and accumulated in the debris troughs to prevent the board from cracking and to increase fastening strength between of the nail fastener and the board, and to allow the screw nail to fasten securely in the center hole of the nail fastener.

Dependencies are inferred from the claim text.