Patent ID: 6866458

Claim:
A fastener for securing a drywall work piece having a paper laminate to a metal substrate comprising: an elongated flat body including a point for penetrating said work piece and said substrate; a securing member carried by said body; a head disposed at a substantially right angle to and extending from one side of said body for use in driving said fastener through said work piece and said substrate, said head defining an opening therethrough; a downwardly depending flange formed integrally with said head surrounding said opening, said flange adapted to penetrate said paper laminate on said work piece; said flange defining a distal surface which distal surface includes a cutting member; a first stamped stiffening groove disposed at a transition between said body and said head and extending from said transition along said body and said head; and said body being coined adjacent to but displaced from said outer edges of said body and said stamped stiffening groove extends along said body for a distance to overlap said coining.