Concrete foundation form screw and method of use

A structure for forming concrete, the structure comprising:

• a first member having a surface providing a concrete forming boundary;
• and
• a second member coupled with the first member via one or more protruding-head fasteners to constrain the first member, each of the one or more protruding-head fasteners comprising
• a head that protrudes when the fastener is installed and shaped to rotationally couple with a drive tool, wherein the protruding head comprises a top chamfered portion and two external portions, the two external portions being non-circular when viewed along the longitudinal axis, shaped to rotationally couple with a drive tool, and separated by a recessed external portion that is recessed relative to the non-circular external portions, such that, when a tool is coupled with the head at an angle to a longitudinal axis of the fastener, one side of the tool extends into the recessed external portion and an opposite side of the tool fits against the chamfered portion;
• and
• a shank fixedly coupled with the protruding head and having a self-tapping threaded portion and a maximum diameter, the protruding head and the shank defining the longitudinal axis through the fastener, the protruding head having a length along the longitudinal axis and a maximum width transverse to the longitudinal axis, the length divided by the maximum width defining an aspect ratio for the protruding head that is equal to or greater than 1.0, the protruding head further having a minimum width that is greater than the maximum diameter of the shank.

A method for forming concrete, the method comprising:

• positioning a first member having a concrete forming surface;
• stabilizing the first member with a second member by coupling the second member to the first member via one or more protruding-head threaded fasteners, each of the one or more protruding-head fasteners comprising a protruding head having a length along a longitudinal axis of the fastener that exceeds a maximum width of the protruding head transverse to the longitudinal axis, each protruding head further having a minimum width that is greater than a maximum diameter of a shank of the fastener, the shank fixedly coupled with the protruding head and having a self-tapping threaded portion, each protruding head further having a top chamfered portion and two external portions, the two external portions being non-circular when viewed along the longitudinal axis, shaped to rotationally couple with a drive tool, and separated by a recessed external portion that is recessed relative to the non-circular external portions, such that, when a tool is coupled with the head at an angle to a longitudinal axis of the fastener, one side of the tool extends into the recessed external portion and an opposite side of the tool fits against the chamfered portion;
• forming concrete against the concrete forming surface;
• and
• uncoupling the first and second members by rotating the protruding head of the fastener to remove the fastener from at least one of the first or second members.