Screws / Application: Lap Siding, Fiber Cement Board to Wood / #8-10 x 1-1/4" Phillips Flat Head w/ Nibs #2 Drive Coarse Thread 1000 Hour Coating Type 17 Fiber Cement Board Screw / 1,000 pcs / Large wafer style head for a flush connection in areas of high wind / Designed to fasten fiber cement board to wood. Recommended for: Lap siding, fiber cement board to wood, fiber cement roofing trim, flooring for tile in kitchen and bath. No. 2 Reduced Phillips Recess Type 17 point. 1,000 hour exterior coating, flat head with nibs.