Hitachi 10163 Hitachi 10163 3-1/4-in x .131 Smooth Hot Dipped Galvanized Fastener- 21&deg; Hot dipped galvanized nails will provide good protection against corrosion in exposed, exterior applications For use with Hitachi nailer models NR83A, NR83A2, NR90AC, NR90AC2, NR90AC3, NR90GR, NR90GR2 and NR90AE Hitachi 10163 3-1/4-in x .131 Smooth Hot Dipped Galvanized Fastener- 21