Screw exclusive for a wooden plate

Details Screw exclusive for a wooden plate Screw exclusive for a wooden plate

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 25/00 (2006.01) F16B 25/10 (2006.01)

Patent

CA 2366648

A screw structure to be used exclusively for fastening a wooden plate mainly has a screw shank helically disposed with squared threads, wherein a shaft flange is disposed at the bottom end of the screw shank to be parallel or slanted to the longitudinal axis of the screw shank between the upper and the bottom rims of the third and fourth threads; the shaft flange is in a convex trapezoid shape and is positioned vertically along the shank to make a pointed or planar cut so as to reduce friction for a smoother driving, an easier and labor-saving operation.

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