Patent ID: 8015773

Claim:
A method of preventing a portion of composite wood from being displaced above a surface and radially outwardly of a fastener upon insertion of a fastener along a longitudinal axis of the fastener into the composite wood, the fastener having a distal tip for entering into the composite wood before other portions of the fastener, the method comprising the steps of: (a) forcing a first amount of the portion of composite wood beneath the surface by contacting the first amount of the portion of composite wood with a first shoulder of the fastener, the first shoulder of the fastener disposed downwardly and outwardly to define a cavity at an angle less than ninety degrees with respect to the longitudinal axis of the fastener to define a frustoconical shoulder directed axially towards the distal tip; and (b) forcing a second amount of the portion of composite wood beneath the surface by contacting the second amount of the portion of composite wood with a second shoulder of the fastener, the second shoulder of the fastener disposed generally perpendicular to the longitudinal axis of the fastener.