Simpson THGQH7.25 SDS Truss Girder Hanger W SDS Screws Gray Painted, Made to Order Non Returnable DGF DGBF DGHF Fire Wall Hangers 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 The PA Purlin Anchor installs by embedding the anchor portion into concrete or masonry and fastening the strap to wood framing using specified nails or approved fasteners The Simpson THGQ truss girder hangers are a lower cost alternative to bolted hangers The Strong Drive SDS Heavy Duty Connector screws help transfer the load between the plies of the supporting girder when they penetrate all plies