... Screw with Zinc Plating Head tye: CSK/flat head, truss head, trumpet head, wafer head, pan framing head, pan wafer head, hexagon head, pan head, and moreThread type: type A, type ... 4 ribbs, Pozi, Philips, HWF undercut, HWH, Serration, flower head and othersPlating: plain, yellow zinc, zinc, black phosphated, gray phosphated ... , RoHS report, and we also pass the by inspection Pan Philips Head Screw