REMFORM®II "HS" fasteners were developed to combine the features of REMFORM® II and REMFORM® II "F" fasteners with an optimized gap between the threads and core diameter.
The optimized pitch allows more threads to be in contact with the plastic mating material in applications that require a higher axial thread engagement, while the optimized core diameter results in higher torsional strength. This higher torsional strength is beneficial in higher strength and fiber reinforced materials.
Together with optimized pitch and core diameter result in better material flow during the thread forming process, resulting in more material between the flanks. More material between the flanks, reduces the risks of overstressing and cracking the the plastic material during the assembly process.