... inspection ISO9001, ISO14001 Features:Dongguan Hotsale white zinc plated Round head Slotted Hand Tighten Screw 1.Material:carbon steel, stainless steel ... , chromated, nickel plated, passivated, hot dip galvanized and etc.3.Head drive: Philips, slotted, philips and slotted and etc.4.Packing ...