Simpson 4d x 1-1/2" Roofing Nail, Annular Ring Shank, 316 Stainless Steel 11 Ga. PACK:1 Lb What is the advantage of

What is the advantage of an annular-ring shank on a roofing nail

and coastal structures - where a standard zinc-plated anchor would have a significantly shorter service life

No Web Stiffeners Required: The encapsulating top-flange design eliminates the need for web stiffeners in standard installations

200" head diameter

20:1 expansion ratio (unrestricted rise) means less material needed

Simpson 4d x 1-1/2" Roofing Nail, Annular Ring Shank, 316 Stainless Steel 11 Ga. PACK:1 Lb What is the advantage ofSimpson 4d x 1 1 2" Annular Ring Shank Roofing Nail in Type 316 Stainless Steel is engineered for demanding roofing applications where corrosion resistance and long term holding power are essential. Built from 11 gauge Type 316 stainless steel, this roofing nail delivers reliable performance in coastal environments, high moisture conditions, and applications involving chemically treated materials. The annular ring shank bites into wood fibers for