Abstract: A connecting device includes an axial core and a plurality of helical projections that extend radially from the core. The core has a cross section comprising two-fifths or less of the circumscribed cross sectional area of the device and the accuracy of the pitch of the helical projections varies by no more than 0.5% from any given probate pitch along the axis of the device. Another connecting device includes an axial core and two or three helical fins projecting radially from the core, wherein the core has a cross section comprising two-fifths or less of the circumscribed cross sectional area of the device, the accuracy of the pitch of the helical fins varies by no more than 0.5% from any given probate pitch along the axis of the device and wherein the root of the fin material includes a radiused surface.

Abstract: A method of connecting two or more construction elements of a building structure using a profiled wire tie (7) comprising a core from which a plurality of loosely wound helical fins extend radially along its longitudinal axis and which is formed into a point (8) at each end.