To nail Hardie board, first determine the correct nail size and type for the thickness of the board. Use a nail gun or hammer and nails to secure the board to the framing, spacing the nails 6-8 inches apart along the edges and 12-16 inches apart in the field. Countersink the nails slightly below the surface of the board using a nail set. Use galvanized or stainless steel nails to prevent rust and corrosion.