#7 x 2-1/4" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Brown 05, Pkg. 70 OHU Ornamental Joist Hangers The black phosphate coating is

The black phosphate coating is traditional in drywall screws and is designed for use in dry interior environments only

This screw features a hex washer head and an aluminum bonded washer that creates a leak proof seal

the THASL422 hangers can be field skewed from 22 1/2 degrees or up to 75 degrees (up to 85° for the THASR/L29 and THASR/L29-2)

The length of the bolt inside the anchor should not exceed 3"

Four EPX3 cartridges of grout

#7 x 2-1/4" Simpson Strong-Tie T15 Trim Head Deck Screw - 316 Stainless Steel, Brown 05, Pkg. 70 OHU Ornamental Joist Hangers The black phosphate coating isThe Simpson Strong Tie Trim Head Decking Screw is designed for PVC and composite decking projects where corrosion resistance and appearance matter most. Made from 316 stainless steel for lasting durability, these screws perform reliably in marine or high exposure environments. Painted head options in 13 colors are matched to leading decking brands for a seamless, concealed finish. For a full reference, see the Composite Decking Color Matching Guide.