Patent ID: 6062786
Filing Date: 2000-05-16
Classification: F16B

Abstract:
A threaded fastener having an anti-cross threading lead-in point, said fastener comprising:a substantially round shank member having first and second ends and a continuous helix comprised of a plurality of threads around a circumference of said shank member, the plurality of threads having a first minor and a first major diameter, wherein the plurality of threads are adapted to mate with corresponding threads of a receiving member, the corresponding threads of a receiving member, the corresponding threads having a second minor and a second major diameter; anda lead-in point at the first end of said shank member, said lead-in point comprising a variable outer diameter and a length, wherein the variable outer diameter is maximum proximate to the first end of said shank member and becomes smaller toward an end of said lead-in point distal from the first end of said shank member,wherein the shape of said lead-in point is defined by a curve tangent to the inside of a cylinder formed about an axis of the plurality of threads, wherein the diameter of the cylinder is smaller than the second minor diameter and larger than the first minor diameter, the curve having a radius equal to the diameter of the cylinder and the radius locus is located on a plane proximate to the first end of said shank member and the diameter of the cylinder.