Hollow metal screw and method of making

摘要: A hollow screw and related process of making is provided, wherein the formed from a generally circular corrosion resistant stainless steel disk cut flat roll stock. The includes head an elongated shaft having wall thickness between about 0.2 to 0.7 millimeters extending therefrom defining shank portion threaded plurality threads thereon with rotational drive mechanism configured facilitate tightening via threads. involves annealing soften stamped screw, followed by thread rolling, then age hardening screw. As such, resultant relatively lightweight, 50% mass solid core made same material, sufficient strength meet most aerospace applications contributes important aircraft fuel economy.