The PDPAWL is a powder-actuated washered pin designed to fasten building components to concrete, steel and CMU. The PDPAWL consists of a hardened-steel PDPA pin preassembled with a 1" washer that provides additional bearing surface for enhanced upload resistance. The PDPAWL is designed for use with Simpson Strong-Tie powder-actuated tool systems as well as other common tools. The PDPAWL-MG models are mechanically galvanized for additional corrosion protection.