Hand Tighten Screw Material:carbon steel, stainless steel finish: zinc plated 100% whole inspection ISO9001, ISO14001 Features:Dongguan Hotsale white zinc plated Round head Slotted Hand Tighten Screw 1.Material:carbon steel, stainless steel of various are available.2.Surface Finish:zinc plated, polishing, plain finish, chromated, nickel plated, passivated, hot dip galvanized and etc.3.Head drive: ...