3/8" x 5" (50 Pack) Galvanized Lag Screw Kit Grade A, Includes: 3/8" USS Flat Washers (50 pc) - Hot Dip Galvanized for Exterior Use - by, LLC

1You may also like Torx w/Pin Tamper Proof Security T-45 Button Cap 18-8 Stainless Steel - 3/8-16 x 3 Qty-25$$Hardware.