Type T-40 Bit required with deep 6-lobe recess to prevent cam-out;Low-profile heads allow hardware installation to be virtually flush;Head is stamped with Simpson Strong Tie Stamp and fastener length for easy identification;Bold thread design provides superior holding power and cInches fastened members together for consistent installation;1-7/16-Inch thread length and recommended installation with a low-speed 1/2-Inch drill and T-40 bit

• Simpson Structural Screws SDW22600-R50 .22-Inch by 6-Inch with 1-7/16-Inch threaded Washer-Head Screw,

Simpson Structural Screws SDW22600-R50 .22-Inch by 6-Inch with 1-7/16-Inch threaded Washer-Head Screw,simada seisakuzyo