Single tool installation/removal of restraint cable with anti-rotation feature

An anti-rotation duct restraint system for connecting flexible ducts, comprising:

• a flexible cable;
• a swaged cable end coupled to the cable along an axis of the cable;
• a flattened threaded cable end coupled to the cable along the axis of the cable;
• a washer, wherein the washer fits between the swaged cable end and a first flange of a first flexible duct;
• a mating metal bushing, wherein the mating metal bushing is adapted to fit over flattened threaded cable end, and wherein the flattened threaded cable end and mating metal bushing, together, fit into a second flange of a second flexible duct;
• and
• a nut, wherein the nut can be threaded onto the flattened threaded cable end for connecting the first flexible duct with the second flexible duct.

A method of connecting flexible ducts using an anti-rotation duct restraint system, comprising:

• preparing a flexible cable having a swaged cable end coupled to the cable along an axis of the cable, and a flattened threaded cable end coupled to the cable along the axis of the cable;
• aligning the swaged cable end with a through-hole in a first flange of a first flexible duct, and a washer, wherein the washer fits between the swaged cable end and the first flange of a first flexible duct;
• aligning the flattened threaded cable end and a mating metal bushing with a through-hole in a second flange of a second flexible duct, wherein the mating metal bushing is adapted to fit over flattened threaded cable end, and wherein the flattened threaded cable end and mating metal bushing, together, fit into the second flange of the second flexible duct;
• and
• securing the flattened threaded cable end to the second flange of the second flexible duct using a nut.