#7 x 2-1/4" Simpson Strong-Tie #1 Square Drive Trim Head Wood Screw - 316 Stainless Steel, Pkg 1 lb Deck Hangers Exterior wood stair systems

Exterior wood stair systems

drive the anchor to the bottom of the drilled hole

roofing felt

Use all specified anchors/fasteners

#7 x 2-1/4" Simpson Strong-Tie #1 Square Drive Trim Head Wood Screw - 316 Stainless Steel, Pkg 1 lb Deck Hangers Exterior wood stair systemsSimpson Strong Tie Trim Head Decking Screws are designed for secure, professional deck installations in wood or composite materials. Built with a trim style head that sits flush for a clean, low profile finish, these screws help deliver a polished look on any decking surface. A Type 17 point makes for quick starts, while coarse lower threads provide strong pull through strength, drawing deck boards tightly to the joists for long lasting performance.