8X2 1/2 Flat Head Nibbed Square Recess Deep Thread Wood Screw Type 17 2/3 Thread Zinc (Pack Qty 2,200) BC-0840DQF17D

The deeper thread design offers greater resistance to pull-out forces. The chip cavity (or auger point) enables the fastener to drive—especially in denser woods—without pre-drilling a pilot hole C1022 case-hardened steel Rockwell C 45 minimim