HEAVIER&THICKER：When the quantity and model are the same,Our screws are heavier;zinc coating is thicker.
HIGH CORROSION RESISTANCE:The screws are yellow zinc passivated and to withstand 72 hours salt spray test, never rust is guaranteed.
HIGH HARDNESS:These self tapping screws are heat treatment improves the tensile strength.Maximum reduction damaged head.
HIGH STRENGTH:The outdoor screws have high Strength philips head,Perfect match with manual and electric screwdrivers.
VARIOUS PRODUCT USES：High performace for the home and engineering,These flat head screws can used for wood、plasterboard、chipboard、concrete、wall、deck、plastic.