Simpson Structural Screws SDS25312-R10 1/4-Inch by 3-1/2-Inch with 2-1/4-Inch threaded Structural Wood Screw， 10-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>3/8-Inch hex head</li><li>Patented 4-Cut point and type 17 point enables easy driving without pre-drilling and minimalm splitting</li><li>Head is stamped with Simpson Strong Tie Stamp and fastener length for easy identification</li><li>Low speed 1/2-Inch drill with 3/8-Inch hex driver recommended for installation</li><li>Meets ICC-ES ESR-2236 codes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51-9UO6GOdL.jpg" noproxy>