Simpson 0.275 x 12" Strong-Drive SDWH TIMBER-HEX Stainless Steel Screw BC Post Base 511 is designed specifically for

511 is designed specifically for structural composite lumber (SCL) header applications

or gable end fillers

standardized performance

safety glasses

The BC40SS is designed for a nominal 4x post size

Simpson 0.275 x 12" Strong-Drive SDWH TIMBER-HEX Stainless Steel Screw BC Post Base 511 is designed specifically forModel No. SDWH271200SS Finish. Type 316 Stainless Steel Length. 12 Head Diameter (in.) 0. 655 Shank Diameter (in.) 0. 275 Drive Type. 1 2 in. Hex Head Type. Hex Washer Head Thread Type. Box Threads Thread Length (in.) 3 Point Type. Sharp Point The Strong Drive SDWH TIMBER HEX SS screw is a stainless steel structural fasteners designed for lag screw replacement. These 0. 185" and 0. 275" diameter hex head fasteners require no predrilling, making them