Patent ID: 6293745
Filing Date: 2001-09-25
Classification: F16B,Y10S

Abstract:
A screw comprising a shank and a head, the head including a driving socket having a first recess that extends axially into the head to a depth and extending along a longitudinal axis, and having a second recess extending along an axis that is normal to the longitudinal axis of the first recess, the first and second recesses together defining a cross-shape recess for receiving a Phillips type crew driver;the driving socket of the head further including a square recess, the square recess being adapted to receive a square socket type driver, the square recess being defined by four sides and including four apexes and two diagonal axes that intersect at an intersection, the intersection of the diagonal axes of the square recess being coincident with an intersection of the longitudinal axis and the axis that is normal to the longitudinal axis, one of the diagonal axes of the square recess being at an angle with the axis that is normal to the longitudinal axis, the angle being not equal to 0.degree., 45.degree. or 90.degree..