Simpson Strong-Tie offers a wide variety of fasteners to meet the requirements for every project type. Our exterior nails provide powerful, corrosion-resistant fastening solutions to help make your outside living space as long lasting as the interior of your home. The fiber-cement siding nail is designed expressly for application of various lap and panel siding materials made of fiber-cement composites. Fiber-Cement Siding Nail — 2-1/2 in. x .120 in. Type 316 Stainless Steel (10 lb.) (Pack of 120).