Simpson 3/4" x 6-1/4" Strong-Bolt 2 Wedge Anchor, 316 Stainless Steel Face-Mount Hangers Why must the included shouldered

Why must the included shouldered screws be used with this connector

Installation Fasteners: #8 screws

low-resistance penetration into roofing substrates

What type of environment is the gray phosphate coating suitable for

Quantity 50-Piece

Simpson 3/4" x 6-1/4" Strong-Bolt 2 Wedge Anchor, 316 Stainless Steel Face-Mount Hangers Why must the included shoulderedSimpson Strong Bolt 2 Wedge Anchor, 3 4" x 6 1 4", 316 Stainless Steel is a heavy duty wedge type expansion anchor engineered by Simpson Strong Tie for demanding concrete fastening applications. Constructed entirely from Type 316 stainless steel including the anchor body, nut, washer, and clip this anchor delivers exceptional, long lasting corrosion resistance across a wide variety of service environments. It is an optimal choice for high performance