#10 x 1-1/2" Simpson Strong-Tie Phillips Flat Head Marine Screws - 316 Stainless Steel, Pkg. 100 MSCB/SCB Bypass Framing Side-Clip Connectors Note the following:

Note the following:

The Strong-Tie HUC812 concealed flange hanger features a G90 Galvanized coating and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153

as well as in solid base materials such as brick

Holding anchor bolts in wet concrete during pours

#10 x 1-1/2" Simpson Strong-Tie Phillips Flat Head Marine Screws - 316 Stainless Steel, Pkg. 100 MSCB/SCB Bypass Framing Side-Clip Connectors Note the following:Simpson Strong Tie Marine Flat Head Screws are designed to fasten securely into fiberglass, plywood, and other wood substitute materials. Built to perform in harsh marine and chemically caustic environments with maximum corrosion resistance, these screws deliver strength and reliability where other fasteners fail. The flat head design ensures a smooth, flush surface finish, making them ideal for demanding applications above or below the waterline.