Hinge Torsion Bar

A straight metal item of various cross-sectional shapes, with serrations, flats, or the like, on each end. It is designed to withstand a severe twisting action along its longitudinal axis while held fast at both ends. It is used in lieu of a hinge pin and creates tension on a hatc (es), door(s), gate(s) , or the like, when in a closed or open position. Excludes torsion bar, suspension.