Patent ID: 6394726
Filing Date: 2002-05-28
Classification: F16B

Abstract:
A threaded fastener comprising:a shaft having a leading end portion and a head on a trailing end portion thereof, and a screw thread having a pressure flank and a trailing flank disposed about at least a portion of the shaft, the pressure flank having a first pressure flank angle on a radial inner portion thereof and a second pressure flank angle on a radial outer portion thereof, the first pressure flank angle being between approximately 5 degrees and approximately 10 degrees, the second pressure flank angle being greater than the first pressure flank angle, and the trailing flank having a rectilinear form having no inflection between the shaft and a tip of the thread, the trailing flank having a trailing flank angle greater than the first pressure flank angle and at least as great as the second pressure flank angle.