a system is disclosed for installing an insert within an aperture in a workpiece , the workpiece having a first side and a second side . the insert is the type in which a portion of the insert plastically deforms on the second side of the workpiece upon application of a linear force provided by a tool , thereby preventing withdrawal of the insert from the aperture . the insert comprises a sleeve member and an integral flange , where the flange has a larger diameter than the aperture . the disclosed installation system performs two actions . it causes the expansion of the sleeve and it also causes the flange of the insert to be fused or welded to the first side of the workpiece . the welded connection between the insert and the workpiece prevents any rotation or spinning of the insert within the workpiece , and increases the integrity of the insert - fastener connection .