Simpson CD18200M 3 16" X 2" Mushroom Head Crimp Anchor Zinc, Pkg 100 Collated Joist Hanger Nails The LSTHD8 installs by securing The LSTHD8 installs by securing the strap to the wall stud assembly and anchoring the holdown to the supporting foundation or framing member using approved fasteners and anchor bolts per Simpson Strong Tie installation guidelines Simpson Strong Tie fixed depth drill bit to be used with DIAB25 and DIABL25 The Simpson Strong Tie Crimp Drive anchor is an easy to install expansion anchor for use in concrete and grout filled block Drill a hole using the specified diameter carbide bit into the base material to a depth of at least 1 2" deeper than the required embedment