Simpson Structural Screws SDW22458-R50 .22-Inch by 4-5/8-Inch with 1-7/16-Inch threaded Washer-head Screw， 50-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Type T-40 Bit required with deep 6-lobe recess to prevent cam-out</li><li>Low-profile heads allow hardware installation to be virtually flush</li><li>Head is stamped with Simpson Strong Tie Stamp and fastener length for easy identification</li><li>Bold thread design provides superior holding power and cInches fastened members together for consistent installation</li><li>1-7/16-Inch thread length and recommended installation with a low-speed 1/2-Inch drill and T-40 bit</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31eJeugKxQL.jpg" noproxy>