HIGH HARDNESS:These self tapping screws are heat treatment improves the tensile strength.Maximum reduction damaged head
NEVER RUST:The decking screws are zinc plated and yellow passivated to withstand 200 hours salt spray test, never rust is guaranteed
EASY PIERCE:Fine thead-depth and sharp v thead can achieve quicker insertion
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