Simpson Strong-Tie #8 x 1-5/8 in. Square Drive Wafer Head Stainless Steel Fiber-Cement Screw (300-Pack)

The Fiber-Cement screw is designed for use in all fiber-cement siding and is ANSI A108-compliant for installation of cement backer boards. The superior corrosion resistance of Type 316 stainless steel eliminates rust streaking and provides long lasting performance in marine and chloride environments. The 0.39 in. Dia. wafer head resists pull through and the deep #2 square drive resists cam outs.