... : zinc plated 100% whole inspection ISO9001, ISO14001 Features:Dongguan Hotsale white zinc plated Round head Slotted Hand Tighten Screw 1.Material ... Finish:zinc plated, polishing, plain finish, chromated, nickel plated, passivated, hot dip galvanized and etc.3.Head drive: Philips, slotted, philips ...