Threaded fastener

A method of using a fastener to attach an object to a substrate, the fastener including:

• a head having a top portion and a bottom portion, the top portion defining an engaging structure engageable by a tool, the bottom portion including:
• (a) a first rib having a first leading face and a first trailing face that meet at a transversely extending first leading edge;
• (b) a second rib having a second leading face and a second trailing face that meet at a transversely extending second leading edge;
• (c) a third rib having a third leading face and a third trailing face that meet at a transversely extending third leading edge;
• and (d) a fourth rib having a fourth leading face and a fourth trailing face that meet at a transversely extending fourth leading edge, and
• a shank have a first end integrally connected to the head and a second end having a tip,
• the head and the shank having a longitudinal axis, and
• at least one helical thread formation integrally connected to and extending outwardly from the shank,
• said method comprising:
• positioning the fastener adjacent to an object and a substrate;
• and
• using a tool to rotate the head of the fastener in a first direction about the longitudinal axis to cause the shank to extend through the object and into the substrate, thereby causing tightening of the fastener in the substrate, and such that for each rib, the leading edge of the rib is engageable with the object before the trailing face of the rib.

A method of using a fastener to attach an object to a substrate, the fastener including:

• a head having a top portion and a bottom portion, the top portion defining an engaging structure engageable by a tool, the bottom portion including a plurality of ribs, wherein each rib includes a leading face and a trailing face that meets the leading face at a transversely extending leading edge of the rib, and
• a shank have a first end integrally connected to the head and a second end having a tip,
• the head and the shank having a longitudinal axis, and
• at least one helical thread formation integrally connected to and extending outwardly from the shank,
• said method comprising:
• positioning the fastener adjacent to an object and a substrate;
• and
• using a tool to rotate the head of the fastener in a first direction about the longitudinal axis to cause the shank to extend through the object and into the substrate, thereby causing tightening of the fastener in the substrate, and causing the leading edge of one of the ribs to engage and dig into a surface of the object to create a frictional torsional resistance force, and providing the force back to the tool to inform an operator of the tool that the head of the fastener has sufficiently engaged the object to provide protection against over tightening of the fastener.