Patent ID: 8469645

Claim:
In combination with a section of construction material and a metal stud, a pneumatically drivable fastener for securing the section of construction material to the metal stud, said fastener comprising: a driving head; and a one piece shank component that does not substantially change shape when pneumatically driven for interacting with the section of construction material and the metal stud, said shank component: (i) being secured at one end to the driving head; (ii) having an axial length extending perpendicular to and longitudinally from said driving head; and (iii) being divided into at least two sections: (a) an intermediate section having axially extending grooves on top and bottom faces of the shank, with a plurality of apertures located in the grooves and extending between said top and bottom faces, said grooves having cutting edges at outer sides of both top and bottom faces that cut into the metal stud to form at least one shear tab from the cut metal stud, said shear tab interacting with one of the groove apertures to secure the fastener through and to said metal stud; and (b) an end section opposite the driving head that terminates in two or more forked tips separated by an intermediate anchoring channel and having a distance between said forked tips which will not split apart substantially when pneumatically driven into the section of construction material and the metal stud, wherein the intermediate anchoring channel connects with the axially extending grooves and the forked tips connect with the outer cutting edges.