Simpson Strong-Tie offers a variety of fastener styles designed specifically for every project type to help you design and build safer, stronger structures. The fiber-cement screw is ideal for binding fiber-cement siding to stressed-skin panels or lap siding to wood. It features a wafer head with self-countersinking nibs, a type-17 point for fast starts and full-length coarse threading. Fiber-Cement Screw — #8 x 1-1/4 in. #2 Square Wafer-Head, Type 316 (100-Qty) (Pack of 5).