Simpson Strong Tie S20ACN1 20d Annular Shank Common Nails 4-Inch 6 Gauge 304 1-Pound Stainless Steel<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>7/16-inch head diameter</li><li>Shank diameter is .203-inch</li><li>Annular ring shank increases hold</li><li>Type 304 stainless steel hand-drive nails</li><li>Diamond Point for easy driving</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41jFLWsWKtL.jpg" noproxy>