Combines with 300 series corrosion resistance and 400 series mechanical performance, outstanding performance with high torque. Salt spray test results Exceeding 2000 hrs #10/M4.8 screw can direct penetration of 3.0mm or 1.6+1.6mm steel plate. (Strong drilling capabilities) Finish: Passivated, Electroplating, Coating Application: Self-Drilling Screw, Decking Screw, Sheet Metal Screw, Salt-Water Environment
Material: A2, A4: for great corrosion resistance 410: for rust resistance and the better drilling 550: combines with 300 series corrosion resistance and 400 series mechanical performance.