4" Simpson T20HACN10 6 Gauge Annular Ring Shank Common Nail - 316 Stainless Steel, Pkg 10 LbThe Simpson T20HACN10 is a robust 6 gauge annular ring shank common nail made from marine grade 316 stainless steel. At 4" in length, it delivers maximum holding power for heavy duty structural and exterior fastening where corrosion resistance is critical. The annular ring shank design increases grip strength and withdrawal resistance, making it ideal for framing, ledger connections, decking, and treated lumber in coastal or wet environments. Key