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Low torque wood screw

  • US 5,516,248 A
  • Filed: 09/07/1994
  • Issued: 05/14/1996
  • Est. Priority Date: 09/07/1994
  • Status: Expired due to Term
First Claim
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1. A low torque fastener screw for securing a wooden workpiece to a substrate, the fastener screw comprising:

  • an elongated body defining a longitudinal axis;

    an enlarged head portion disposed on an end of the elongated body, the head portion having a generally planar end surface disposed substantially transverse to the longitudinal axis and having a drive recess therein;

    an external thread disposed on an opposite end of the elongated body and terminating in a point to facilitate entry of the screw into the wooden workpiece and substrate;

    an elongated generally cylindrical shank coaxial with the longitudinal axis and disposed between the enlarged head and the thread; and

    a generally annular reamer surface coaxial with the longitudinal axis and disposed between the external thread and elongated shank, the reamer surface having an outer diameter larger than the shank but less than a major diameter of the external thread so as to ream a clearance hole for substantially non-interfering entry of the elongated shank into the wooden workpiece as the fastener screw is driven through.

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