X1B1016R100 Self Drilling X Metal Screw (Box of 100pcs)#10 X 1IN 16 TPI SD ZINC 100/BOXKey Features5/16" hex head (replacement driver bit — BITHEXR516-134)Drill pointHex-washer headApplicationsSteel decking to structural steelSteel stitching (“side-lap” stitching)Cold-formed ...X1B1016R100 Self Drilling X Metal Screw (Box of 100pcs)#10 X 1IN 16 TPI SD ZINC 100/BOXKey Features5/16" hex head (replacement driver bit — BITHEXR516-134)Drill pointHex-washer headApplicationsSteel decking to structural steelSteel stitching (“side-lap” stitching)Cold-formed steel framingWarningIndustry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use this product in dry, interior, and noncorrosive environments only.