#10 x 1 1 2" Quik Drive PC Standing Seam Roofing Panel Clip Collated Screws, Quik Guard Coating, Pkg 1500 Quik Drive Wood Screws these anchor bolts are engineered these anchor bolts are engineered for heavy duty structural connections where increased load capacity is required 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 Strong Tie Quik Drive PC standing seam roofing panel clip screws are a collated screw designed for use in Simpsons Quik Drive systems to quickly install panel clips Designed for use with these Quik Drive Attachments