Patent ID: 6158938
Filing Date: 2000-12-12
Classification: F16B

Abstract:
An anti-cross threading fastener comprising:a shaft portion having an axial dimension and a distal end;first threads formed on a portion of the shaft portion, the first threads having a major diameter, a minor diameter, and a first flank angle; andsecond threads formed on a portion of the shaft portion proximate the distal end, the second threads having two generally planar flanks which converge to form a generally pointed standard machine thread crest, and the second threads having a major diameter less than the major diameter of the first threads,a minor diameter equal to the minor diameter of the first threads, and a second flank angle greater than the flank angle of the first threads;wherein a taper angle is defined by a crest of a first thread and a crest of an adjacent second thread, and the taper angle is approximately 14 degrees.